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Packagehl7.fhir.uv.xver-r5.r4
Resource TypeStructureDefinition
IdStructureDefinition-ext-R5-SubstancePolymer.repeat.json
FHIR VersionR4
Sourcehttp://hl7.org/fhir/uv/xver-r5.r4/0.1.0/StructureDefinition-ext-R5-SubstancePolymer.repeat.html
URLhttp://hl7.org/fhir/5.0/StructureDefinition/extension-SubstancePolymer.repeat
Version0.1.0
Statusactive
Date2026-03-17T21:02:03.8104715+00:00
NameExtensionSubstancePolymer_Repeat
TitleR5: Specifies and quantifies the repeated units and their configuration (new)
Realmuv
Authorityhl7
DescriptionR5: `SubstancePolymer.repeat` (new:BackboneElement)
PurposeThis extension is part of the cross-version definitions generated to enable use of the element `SubstancePolymer.repeat` as defined in FHIR R5 in FHIR R4. The source element is defined as: `SubstancePolymer.repeat` 0..* `BackboneElement` Across FHIR versions, the element set has been mapped as: * R5 `SubstancePolymer.repeat` 0..* `BackboneElement` Following are the generation technical comments: Element `SubstancePolymer.repeat` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped. Element `SubstancePolymer.repeat` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
TypeExtension
Kindcomplex-type

Resources that use this resource

ConceptMap
hl7.fhir.uv.xver-r5.r4#0.1.0R5-SubstancePolymer-element-map-to-R4Cross-version mapping for FHIR R5 SubstancePolymer to FHIR R4 Basic
hl7.fhir.uv.xver-r5.r3#0.1.0R5-SubstancePolymer-element-map-to-R3Cross-version mapping for FHIR R5 SubstancePolymer to FHIR STU3 Basic
hl7.fhir.uv.xver-r5.r4b#0.1.0R5-SubstancePolymer-element-map-to-R4BCross-version mapping for FHIR R5 SubstancePolymer to FHIR R4B Basic
StructureDefinition
hl7.fhir.uv.xver-r5.r4#0.1.0profile-SubstancePolymerCross-version Profile for R5.SubstancePolymer for use in FHIR R4

Resources that this resource uses

No resources found


Examples of Use for Extension

No extension usage examples found


Narrative

Note: links and images are rebased to the (stated) source

Generated Narrative: StructureDefinition ext-R5-SubstancePolymer.repeat

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 0..*Extension(4.0.1)R5: Specifies and quantifies the repeated units and their configuration (new)
... Slices for extension 0..*ExtensionExtension
Slice: Unordered, Open by value:url
.... extension:averageMolecularFormula 0..1ExtensionR5: A representation of an (average) molecular formula from a polymer (new)
..... url 1..1uri"averageMolecularFormula"
..... value[x] 0..1stringA representation of an (average) molecular formula from a polymer
.... extension:repeatUnitAmountType 0..1ExtensionR5: How the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average) (new)
..... url 1..1uri"repeatUnitAmountType"
..... value[x] 0..1CodeableConceptHow the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average)
.... extension:repeatUnit 0..*ExtensionR5: An SRU - Structural Repeat Unit (new)
..... Slices for extension 0..*ExtensionExtension
Slice: Unordered, Open by value:url
...... extension:unit 0..1ExtensionR5: Structural repeat units are essential elements for defining polymers (new)
....... url 1..1uri"unit"
....... value[x] 0..1stringStructural repeat units are essential elements for defining polymers
...... extension:orientation 0..1ExtensionR5: The orientation of the polymerisation, e.g. head-tail, head-head, random (new)
....... url 1..1uri"orientation"
....... value[x] 0..1CodeableConceptThe orientation of the polymerisation, e.g. head-tail, head-head, random
...... extension:amount 0..1ExtensionR5: Number of repeats of this unit (new)
....... url 1..1uri"amount"
....... value[x] 0..1integerNumber of repeats of this unit
...... extension:degreeOfPolymerisation 0..*ExtensionR5: Applies to homopolymer and block co-polymers where the degree of polymerisation within a block can be described (new)
....... Slices for extension 0..*ExtensionExtension
Slice: Unordered, Open by value:url
........ extension:type 0..1ExtensionR5: The type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio (new)
......... url 1..1uri"type"
......... value[x] 0..1CodeableConceptThe type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio
........ extension:average 0..1ExtensionR5: An average amount of polymerisation (new)
......... url 1..1uri"average"
......... value[x] 0..1integerAn average amount of polymerisation
........ extension:low 0..1ExtensionR5: A low expected limit of the amount (new)
......... url 1..1uri"low"
......... value[x] 0..1integerA low expected limit of the amount
........ extension:high 0..1ExtensionR5: A high expected limit of the amount (new)
......... url 1..1uri"high"
......... value[x] 0..1integerA high expected limit of the amount
....... url 1..1uri"degreeOfPolymerisation"
....... value[x] 0..0Value of extension
...... extension:structuralRepresentation 0..*ExtensionR5: A graphical structure for this SRU (new)
....... Slices for extension 0..*ExtensionExtension
Slice: Unordered, Open by value:url
........ extension:type 0..1ExtensionR5: The type of structure (e.g. Full, Partial, Representative) (new)
......... url 1..1uri"type"
......... value[x] 0..1CodeableConceptThe type of structure (e.g. Full, Partial, Representative)
........ extension:representation 0..1ExtensionR5: The structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF (new)
......... url 1..1uri"representation"
......... value[x] 0..1stringThe structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF
........ extension:format 0..1ExtensionR5: The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF (new)
......... url 1..1uri"format"
......... value[x] 0..1CodeableConceptThe format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF
........ extension:attachment 0..1ExtensionR5: An attached file with the structural representation (new)
......... url 1..1uri"attachment"
......... value[x] 0..1AttachmentAn attached file with the structural representation
....... url 1..1uri"structuralRepresentation"
....... value[x] 0..0Value of extension
..... url 1..1uri"repeatUnit"
..... value[x] 0..0Value of extension
... url 1..1uri"http://hl7.org/fhir/5.0/StructureDefinition/extension-SubstancePolymer.repeat"
... value[x] 0..0Value of extension

doco Documentation for this format

Source1

{
  "resourceType": "StructureDefinition",
  "id": "ext-R5-SubstancePolymer.repeat",
  "text": {
    "status": "extensions",
    "div": "<!-- snip (see above) -->"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "fhir"
    },
    {
      "extension": [
        {
          "url": "packageId",
          "valueId": "hl7.fhir.uv.xver-r5.r4"
        },
        {
          "url": "version",
          "valueString": "0.1.0"
        },
        {
          "url": "uri",
          "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r5.r4"
        }
      ],
      "url": "http://hl7.org/fhir/StructureDefinition/package-source"
    },
    {
      "extension": [
        {
          "url": "startFhirVersion",
          "valueCode": "4.0"
        },
        {
          "url": "endFhirVersion",
          "valueCode": "4.0"
        }
      ],
      "url": "http://hl7.org/fhir/StructureDefinition/version-specific-use"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 0,
      "_valueInteger": {
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
            "valueCanonical": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r5.r4"
          }
        ]
      }
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "trial-use",
      "_valueCode": {
        "extension": [
          {
            "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
            "valueCanonical": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r5.r4"
          }
        ]
      }
    }
  ],
  "url": "http://hl7.org/fhir/5.0/StructureDefinition/extension-SubstancePolymer.repeat",
  "version": "0.1.0",
  "name": "ExtensionSubstancePolymer_Repeat",
  "title": "R5: Specifies and quantifies the repeated units and their configuration (new)",
  "status": "active",
  "experimental": false,
  "date": "2026-03-17T21:02:03.8104715+00:00",
  "publisher": "FHIR Infrastructure",
  "contact": [
    {
      "name": "FHIR Infrastructure",
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/fiwg"
        }
      ]
    }
  ],
  "description": "R5: `SubstancePolymer.repeat` (new:BackboneElement)",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001",
          "display": "World"
        }
      ]
    }
  ],
  "purpose": "This extension is part of the cross-version definitions generated to enable use of the\r\nelement `SubstancePolymer.repeat` as defined in FHIR R5\r\nin FHIR R4.\r\n\r\nThe source element is defined as:\r\n`SubstancePolymer.repeat` 0..* `BackboneElement`\r\n\r\nAcross FHIR versions, the element set has been mapped as:\r\n* R5 `SubstancePolymer.repeat` 0..* `BackboneElement`\r\n\r\nFollowing are the generation technical comments:\r\nElement `SubstancePolymer.repeat` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "Basic"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1",
  "derivation": "constraint",
  "snapshot": {
    "extension": [
      {
        "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
        "valueString": "4.0.1"
      }
    ],
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "R5: Specifies and quantifies the repeated units and their configuration (new)",
        "definition": "R5: `SubstancePolymer.repeat` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension",
          "min": 0,
          "max": "*"
        },
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false
      },
      {
        "id": "Extension.id",
        "path": "Extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "ordered": false,
          "rules": "open"
        },
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:averageMolecularFormula",
        "path": "Extension.extension",
        "sliceName": "averageMolecularFormula",
        "short": "R5: A representation of an (average) molecular formula from a polymer (new)",
        "definition": "R5: `SubstancePolymer.repeat.averageMolecularFormula` (new:string)",
        "comment": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:averageMolecularFormula.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:averageMolecularFormula.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:averageMolecularFormula.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "averageMolecularFormula",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:averageMolecularFormula.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "A representation of an (average) molecular formula from a polymer",
        "definition": "A representation of an (average) molecular formula from a polymer.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnitAmountType",
        "path": "Extension.extension",
        "sliceName": "repeatUnitAmountType",
        "short": "R5: How the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average) (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnitAmountType` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnitAmountType.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnitAmountType.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnitAmountType.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "repeatUnitAmountType",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnitAmountType.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "How the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average)",
        "definition": "How the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit",
        "path": "Extension.extension",
        "sliceName": "repeatUnit",
        "short": "R5: An SRU - Structural Repeat Unit (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.id",
        "path": "Extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "ordered": false,
          "rules": "open"
        },
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit",
        "path": "Extension.extension.extension",
        "sliceName": "unit",
        "short": "R5: Structural repeat units are essential elements for defining polymers (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.unit` (new:string)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.unit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.unit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.unit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.unit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.unit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.unit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "unit",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Structural repeat units are essential elements for defining polymers",
        "definition": "Structural repeat units are essential elements for defining polymers.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation",
        "path": "Extension.extension.extension",
        "sliceName": "orientation",
        "short": "R5: The orientation of the polymerisation, e.g. head-tail, head-head, random (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.orientation` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.orientation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.orientation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "orientation",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The orientation of the polymerisation, e.g. head-tail, head-head, random",
        "definition": "The orientation of the polymerisation, e.g. head-tail, head-head, random.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount",
        "path": "Extension.extension.extension",
        "sliceName": "amount",
        "short": "R5: Number of repeats of this unit (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.amount` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "amount",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Number of repeats of this unit",
        "definition": "Number of repeats of this unit.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation",
        "path": "Extension.extension.extension",
        "sliceName": "degreeOfPolymerisation",
        "short": "R5: Applies to homopolymer and block co-polymers where the degree of polymerisation within a block can be described (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "ordered": false,
          "rules": "open"
        },
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type",
        "path": "Extension.extension.extension.extension",
        "sliceName": "type",
        "short": "R5: The type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "type",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio",
        "definition": "The type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average",
        "path": "Extension.extension.extension.extension",
        "sliceName": "average",
        "short": "R5: An average amount of polymerisation (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "average",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "An average amount of polymerisation",
        "definition": "An average amount of polymerisation.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low",
        "path": "Extension.extension.extension.extension",
        "sliceName": "low",
        "short": "R5: A low expected limit of the amount (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "low",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "A low expected limit of the amount",
        "definition": "A low expected limit of the amount.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high",
        "path": "Extension.extension.extension.extension",
        "sliceName": "high",
        "short": "R5: A high expected limit of the amount (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "high",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "A high expected limit of the amount",
        "definition": "A high expected limit of the amount.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "degreeOfPolymerisation",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list).",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "base64Binary"
          },
          {
            "code": "boolean"
          },
          {
            "code": "canonical"
          },
          {
            "code": "code"
          },
          {
            "code": "date"
          },
          {
            "code": "dateTime"
          },
          {
            "code": "decimal"
          },
          {
            "code": "id"
          },
          {
            "code": "instant"
          },
          {
            "code": "integer"
          },
          {
            "code": "markdown"
          },
          {
            "code": "oid"
          },
          {
            "code": "positiveInt"
          },
          {
            "code": "string"
          },
          {
            "code": "time"
          },
          {
            "code": "unsignedInt"
          },
          {
            "code": "uri"
          },
          {
            "code": "url"
          },
          {
            "code": "uuid"
          },
          {
            "code": "Address"
          },
          {
            "code": "Age"
          },
          {
            "code": "Annotation"
          },
          {
            "code": "Attachment"
          },
          {
            "code": "CodeableConcept"
          },
          {
            "code": "Coding"
          },
          {
            "code": "ContactPoint"
          },
          {
            "code": "Count"
          },
          {
            "code": "Distance"
          },
          {
            "code": "Duration"
          },
          {
            "code": "HumanName"
          },
          {
            "code": "Identifier"
          },
          {
            "code": "Money"
          },
          {
            "code": "Period"
          },
          {
            "code": "Quantity"
          },
          {
            "code": "Range"
          },
          {
            "code": "Ratio"
          },
          {
            "code": "Reference"
          },
          {
            "code": "SampledData"
          },
          {
            "code": "Signature"
          },
          {
            "code": "Timing"
          },
          {
            "code": "ContactDetail"
          },
          {
            "code": "Contributor"
          },
          {
            "code": "DataRequirement"
          },
          {
            "code": "Expression"
          },
          {
            "code": "ParameterDefinition"
          },
          {
            "code": "RelatedArtifact"
          },
          {
            "code": "TriggerDefinition"
          },
          {
            "code": "UsageContext"
          },
          {
            "code": "Dosage"
          },
          {
            "code": "Meta"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation",
        "path": "Extension.extension.extension",
        "sliceName": "structuralRepresentation",
        "short": "R5: A graphical structure for this SRU (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.id",
        "path": "Extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "ordered": false,
          "rules": "open"
        },
        "short": "Extension",
        "definition": "An Extension",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type",
        "path": "Extension.extension.extension.extension",
        "sliceName": "type",
        "short": "R5: The type of structure (e.g. Full, Partial, Representative) (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "type",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The type of structure (e.g. Full, Partial, Representative)",
        "definition": "The type of structure (e.g. Full, Partial, Representative).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation",
        "path": "Extension.extension.extension.extension",
        "sliceName": "representation",
        "short": "R5: The structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` (new:string)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "representation",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF",
        "definition": "The structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format",
        "path": "Extension.extension.extension.extension",
        "sliceName": "format",
        "short": "R5: The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "format",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF",
        "definition": "The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment",
        "path": "Extension.extension.extension.extension",
        "sliceName": "attachment",
        "short": "R5: An attached file with the structural representation (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` (new:Attachment)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.id",
        "path": "Extension.extension.extension.extension.id",
        "representation": [
          "xmlAttr"
        ],
        "short": "Unique id for inter-element referencing",
        "definition": "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Element.id",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "string"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.extension",
        "path": "Extension.extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "description": "Extensions are always sliced by (at least) url",
          "rules": "open"
        },
        "short": "Additional content defined by implementations",
        "definition": "May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance  applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
        "comment": "There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions.  The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.",
        "alias": [
          "extensions",
          "user content"
        ],
        "min": 0,
        "max": "*",
        "base": {
          "path": "Element.extension",
          "min": 0,
          "max": "*"
        },
        "type": [
          {
            "code": "Extension"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          },
          {
            "key": "ext-1",
            "severity": "error",
            "human": "Must have either extensions or value[x], not both",
            "expression": "extension.exists() != value.exists()",
            "xpath": "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])",
            "source": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "n/a"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.url",
        "path": "Extension.extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "attachment",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "An attached file with the structural representation",
        "definition": "An attached file with the structural representation.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Attachment"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.url",
        "path": "Extension.extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "structuralRepresentation",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list).",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "base64Binary"
          },
          {
            "code": "boolean"
          },
          {
            "code": "canonical"
          },
          {
            "code": "code"
          },
          {
            "code": "date"
          },
          {
            "code": "dateTime"
          },
          {
            "code": "decimal"
          },
          {
            "code": "id"
          },
          {
            "code": "instant"
          },
          {
            "code": "integer"
          },
          {
            "code": "markdown"
          },
          {
            "code": "oid"
          },
          {
            "code": "positiveInt"
          },
          {
            "code": "string"
          },
          {
            "code": "time"
          },
          {
            "code": "unsignedInt"
          },
          {
            "code": "uri"
          },
          {
            "code": "url"
          },
          {
            "code": "uuid"
          },
          {
            "code": "Address"
          },
          {
            "code": "Age"
          },
          {
            "code": "Annotation"
          },
          {
            "code": "Attachment"
          },
          {
            "code": "CodeableConcept"
          },
          {
            "code": "Coding"
          },
          {
            "code": "ContactPoint"
          },
          {
            "code": "Count"
          },
          {
            "code": "Distance"
          },
          {
            "code": "Duration"
          },
          {
            "code": "HumanName"
          },
          {
            "code": "Identifier"
          },
          {
            "code": "Money"
          },
          {
            "code": "Period"
          },
          {
            "code": "Quantity"
          },
          {
            "code": "Range"
          },
          {
            "code": "Ratio"
          },
          {
            "code": "Reference"
          },
          {
            "code": "SampledData"
          },
          {
            "code": "Signature"
          },
          {
            "code": "Timing"
          },
          {
            "code": "ContactDetail"
          },
          {
            "code": "Contributor"
          },
          {
            "code": "DataRequirement"
          },
          {
            "code": "Expression"
          },
          {
            "code": "ParameterDefinition"
          },
          {
            "code": "RelatedArtifact"
          },
          {
            "code": "TriggerDefinition"
          },
          {
            "code": "UsageContext"
          },
          {
            "code": "Dosage"
          },
          {
            "code": "Meta"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.url",
        "path": "Extension.extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "repeatUnit",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list).",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "base64Binary"
          },
          {
            "code": "boolean"
          },
          {
            "code": "canonical"
          },
          {
            "code": "code"
          },
          {
            "code": "date"
          },
          {
            "code": "dateTime"
          },
          {
            "code": "decimal"
          },
          {
            "code": "id"
          },
          {
            "code": "instant"
          },
          {
            "code": "integer"
          },
          {
            "code": "markdown"
          },
          {
            "code": "oid"
          },
          {
            "code": "positiveInt"
          },
          {
            "code": "string"
          },
          {
            "code": "time"
          },
          {
            "code": "unsignedInt"
          },
          {
            "code": "uri"
          },
          {
            "code": "url"
          },
          {
            "code": "uuid"
          },
          {
            "code": "Address"
          },
          {
            "code": "Age"
          },
          {
            "code": "Annotation"
          },
          {
            "code": "Attachment"
          },
          {
            "code": "CodeableConcept"
          },
          {
            "code": "Coding"
          },
          {
            "code": "ContactPoint"
          },
          {
            "code": "Count"
          },
          {
            "code": "Distance"
          },
          {
            "code": "Duration"
          },
          {
            "code": "HumanName"
          },
          {
            "code": "Identifier"
          },
          {
            "code": "Money"
          },
          {
            "code": "Period"
          },
          {
            "code": "Quantity"
          },
          {
            "code": "Range"
          },
          {
            "code": "Ratio"
          },
          {
            "code": "Reference"
          },
          {
            "code": "SampledData"
          },
          {
            "code": "Signature"
          },
          {
            "code": "Timing"
          },
          {
            "code": "ContactDetail"
          },
          {
            "code": "Contributor"
          },
          {
            "code": "DataRequirement"
          },
          {
            "code": "Expression"
          },
          {
            "code": "ParameterDefinition"
          },
          {
            "code": "RelatedArtifact"
          },
          {
            "code": "TriggerDefinition"
          },
          {
            "code": "UsageContext"
          },
          {
            "code": "Dosage"
          },
          {
            "code": "Meta"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "representation": [
          "xmlAttr"
        ],
        "short": "identifies the meaning of the extension",
        "definition": "Source of the definition for the extension code - a logical name or a URL.",
        "comment": "The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "type": [
          {
            "extension": [
              {
                "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
                "valueUrl": "uri"
              }
            ],
            "code": "http://hl7.org/fhirpath/System.String"
          }
        ],
        "fixedUri": "http://hl7.org/fhir/5.0/StructureDefinition/extension-SubstancePolymer.repeat",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "short": "Value of extension",
        "definition": "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list).",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "base64Binary"
          },
          {
            "code": "boolean"
          },
          {
            "code": "canonical"
          },
          {
            "code": "code"
          },
          {
            "code": "date"
          },
          {
            "code": "dateTime"
          },
          {
            "code": "decimal"
          },
          {
            "code": "id"
          },
          {
            "code": "instant"
          },
          {
            "code": "integer"
          },
          {
            "code": "markdown"
          },
          {
            "code": "oid"
          },
          {
            "code": "positiveInt"
          },
          {
            "code": "string"
          },
          {
            "code": "time"
          },
          {
            "code": "unsignedInt"
          },
          {
            "code": "uri"
          },
          {
            "code": "url"
          },
          {
            "code": "uuid"
          },
          {
            "code": "Address"
          },
          {
            "code": "Age"
          },
          {
            "code": "Annotation"
          },
          {
            "code": "Attachment"
          },
          {
            "code": "CodeableConcept"
          },
          {
            "code": "Coding"
          },
          {
            "code": "ContactPoint"
          },
          {
            "code": "Count"
          },
          {
            "code": "Distance"
          },
          {
            "code": "Duration"
          },
          {
            "code": "HumanName"
          },
          {
            "code": "Identifier"
          },
          {
            "code": "Money"
          },
          {
            "code": "Period"
          },
          {
            "code": "Quantity"
          },
          {
            "code": "Range"
          },
          {
            "code": "Ratio"
          },
          {
            "code": "Reference"
          },
          {
            "code": "SampledData"
          },
          {
            "code": "Signature"
          },
          {
            "code": "Timing"
          },
          {
            "code": "ContactDetail"
          },
          {
            "code": "Contributor"
          },
          {
            "code": "DataRequirement"
          },
          {
            "code": "Expression"
          },
          {
            "code": "ParameterDefinition"
          },
          {
            "code": "RelatedArtifact"
          },
          {
            "code": "TriggerDefinition"
          },
          {
            "code": "UsageContext"
          },
          {
            "code": "Dosage"
          },
          {
            "code": "Meta"
          }
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children",
            "expression": "hasValue() or (children().count() > id.count())",
            "xpath": "@value|f:*|h:div",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.0.1"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "R5: Specifies and quantifies the repeated units and their configuration (new)",
        "definition": "R5: `SubstancePolymer.repeat` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension",
          "min": 0,
          "max": "*"
        },
        "isModifier": false
      },
      {
        "id": "Extension.extension",
        "path": "Extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        },
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:averageMolecularFormula",
        "path": "Extension.extension",
        "sliceName": "averageMolecularFormula",
        "short": "R5: A representation of an (average) molecular formula from a polymer (new)",
        "definition": "R5: `SubstancePolymer.repeat.averageMolecularFormula` (new:string)",
        "comment": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.averageMolecularFormula` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.averageMolecularFormula` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.averageMolecularFormula` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:averageMolecularFormula.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "averageMolecularFormula"
      },
      {
        "id": "Extension.extension:averageMolecularFormula.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "A representation of an (average) molecular formula from a polymer",
        "definition": "A representation of an (average) molecular formula from a polymer.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnitAmountType",
        "path": "Extension.extension",
        "sliceName": "repeatUnitAmountType",
        "short": "R5: How the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average) (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnitAmountType` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnitAmountType` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnitAmountType` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnitAmountType.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "repeatUnitAmountType"
      },
      {
        "id": "Extension.extension:repeatUnitAmountType.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "How the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average)",
        "definition": "How the quantitative amount of Structural Repeat Units is captured (e.g. Exact, Numeric, Average).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit",
        "path": "Extension.extension",
        "sliceName": "repeatUnit",
        "short": "R5: An SRU - Structural Repeat Unit (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit` is part of an existing definition because parent element `SubstancePolymer.repeat` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        },
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit",
        "path": "Extension.extension.extension",
        "sliceName": "unit",
        "short": "R5: Structural repeat units are essential elements for defining polymers (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.unit` (new:string)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.unit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.unit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.unit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.unit` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.unit` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.unit` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "unit"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:unit.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Structural repeat units are essential elements for defining polymers",
        "definition": "Structural repeat units are essential elements for defining polymers.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation",
        "path": "Extension.extension.extension",
        "sliceName": "orientation",
        "short": "R5: The orientation of the polymerisation, e.g. head-tail, head-head, random (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.orientation` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.orientation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.orientation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.orientation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "orientation"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:orientation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The orientation of the polymerisation, e.g. head-tail, head-head, random",
        "definition": "The orientation of the polymerisation, e.g. head-tail, head-head, random.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount",
        "path": "Extension.extension.extension",
        "sliceName": "amount",
        "short": "R5: Number of repeats of this unit (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.amount` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.amount` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.amount` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.amount` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "amount"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:amount.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Number of repeats of this unit",
        "definition": "Number of repeats of this unit.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation",
        "path": "Extension.extension.extension",
        "sliceName": "degreeOfPolymerisation",
        "short": "R5: Applies to homopolymer and block co-polymers where the degree of polymerisation within a block can be described (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        },
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type",
        "path": "Extension.extension.extension.extension",
        "sliceName": "type",
        "short": "R5: The type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "type"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:type.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio",
        "definition": "The type of the degree of polymerisation shall be described, e.g. SRU/Polymer Ratio.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average",
        "path": "Extension.extension.extension.extension",
        "sliceName": "average",
        "short": "R5: An average amount of polymerisation (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.average` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "average"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:average.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "An average amount of polymerisation",
        "definition": "An average amount of polymerisation.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low",
        "path": "Extension.extension.extension.extension",
        "sliceName": "low",
        "short": "R5: A low expected limit of the amount (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.low` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "low"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:low.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "A low expected limit of the amount",
        "definition": "A low expected limit of the amount.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high",
        "path": "Extension.extension.extension.extension",
        "sliceName": "high",
        "short": "R5: A high expected limit of the amount (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` (new:integer)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.degreeOfPolymerisation.high` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "high"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.extension:high.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "A high expected limit of the amount",
        "definition": "A high expected limit of the amount.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "integer"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "degreeOfPolymerisation"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:degreeOfPolymerisation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation",
        "path": "Extension.extension.extension",
        "sliceName": "structuralRepresentation",
        "short": "R5: A graphical structure for this SRU (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` (new:BackboneElement)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension",
        "path": "Extension.extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        },
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type",
        "path": "Extension.extension.extension.extension",
        "sliceName": "type",
        "short": "R5: The type of structure (e.g. Full, Partial, Representative) (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "type"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:type.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The type of structure (e.g. Full, Partial, Representative)",
        "definition": "The type of structure (e.g. Full, Partial, Representative).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation",
        "path": "Extension.extension.extension.extension",
        "sliceName": "representation",
        "short": "R5: The structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` (new:string)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.representation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "representation"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:representation.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF",
        "definition": "The structural representation as text string in a standard format e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format",
        "path": "Extension.extension.extension.extension",
        "sliceName": "format",
        "short": "R5: The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` (new:CodeableConcept)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.format` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "format"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:format.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF",
        "definition": "The format of the representation e.g. InChI, SMILES, MOLFILE, CDX, SDF, PDB, mmCIF.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "CodeableConcept"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment",
        "path": "Extension.extension.extension.extension",
        "sliceName": "attachment",
        "short": "R5: An attached file with the structural representation (new)",
        "definition": "R5: `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` (new:Attachment)",
        "comment": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is part of an existing definition because parent element `SubstancePolymer.repeat.repeatUnit.structuralRepresentation` requires a cross-version extension.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` is not mapped to FHIR R4, since FHIR R5 `SubstancePolymer` is not mapped.\nElement `SubstancePolymer.repeat.repeatUnit.structuralRepresentation.attachment` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.url",
        "path": "Extension.extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "attachment"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.extension:attachment.value[x]",
        "path": "Extension.extension.extension.extension.value[x]",
        "short": "An attached file with the structural representation",
        "definition": "An attached file with the structural representation.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Attachment"
          }
        ]
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "structuralRepresentation"
      },
      {
        "id": "Extension.extension:repeatUnit.extension:structuralRepresentation.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      },
      {
        "id": "Extension.extension:repeatUnit.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "repeatUnit"
      },
      {
        "id": "Extension.extension:repeatUnit.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "http://hl7.org/fhir/5.0/StructureDefinition/extension-SubstancePolymer.repeat"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      }
    ]
  }
}