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Packagehl7.fhir.uv.xver-r2.r4
Resource TypeStructureDefinition
IdStructureDefinition-ext-R2-ValueSet.cod.concept.json
FHIR VersionR4

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Narrative

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

Generated Narrative: StructureDefinition ext-R2-ValueSet.cod.concept

NameFlagsCard.TypeDescription & Constraintsdoco
.. Extension 1..*Extension(4.0.1)DSTU2: Concepts in the code system (new)
... Slices for extension 1..*ExtensionExtension
Slice: Unordered, Open by value:url
.... extension:code 1..1ExtensionDSTU2: Code that identifies concept (new)
..... url 1..1uri"code"
..... value[x] 1..1codeCode that identifies concept
.... extension:abstract 0..1ExtensionDSTU2: If this code is not for use as a real concept (new)
..... url 1..1uri"abstract"
..... value[x] 0..1booleanIf this code is not for use as a real concept
.... extension:display 0..1ExtensionDSTU2: Text to display to the user (new)
..... url 1..1uri"display"
..... value[x] 0..1stringText to display to the user
.... extension:definition 0..1ExtensionDSTU2: Formal definition (new)
..... url 1..1uri"definition"
..... value[x] 0..1stringFormal definition
.... extension:designation 0..*ExtensionDSTU2: Additional representations for the concept (new)
..... Slices for extension 1..*ExtensionExtension
Slice: Unordered, Open by value:url
...... extension:language 0..1ExtensionDSTU2: Human language of the designation (new)
....... url 1..1uri"language"
....... value[x] 0..1codeHuman language of the designation
...... extension:use 0..1ExtensionDSTU2: Details how this designation would be used (new)
....... url 1..1uri"use"
....... value[x] 0..1CodingDetails how this designation would be used
...... extension:value 1..1ExtensionDSTU2: The text value for this designation (new)
....... url 1..1uri"value"
....... value[x] 1..1stringThe text value for this designation
..... url 1..1uri"designation"
..... value[x] 0..0Value of extension
.... extension:concept 0..*ExtensionDSTU2: Child Concepts (is-a/contains/categorizes) (new)
..... url 1..1uri"http://hl7.org/fhir/1.0/StructureDefinition/extension-ValueSet.codeSystem.concept"
..... value[x] 0..0Value of extension
... url 1..1uri"http://hl7.org/fhir/1.0/StructureDefinition/extension-ValueSet.codeSystem.concept"
... value[x] 0..0Value of extension

doco Documentation for this format

Source1

{
  "resourceType": "StructureDefinition",
  "id": "ext-R2-ValueSet.cod.concept",
  "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-r2.r4"
        },
        {
          "url": "version",
          "valueString": "0.1.0"
        },
        {
          "url": "uri",
          "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r2.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-r2.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-r2.r4"
          }
        ]
      }
    }
  ],
  "url": "http://hl7.org/fhir/1.0/StructureDefinition/extension-ValueSet.codeSystem.concept",
  "version": "0.1.0",
  "name": "ExtensionValueSet_CodeSystem_Concept",
  "title": "DSTU2: Concepts in the code system (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": "DSTU2: `ValueSet.codeSystem.concept` (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 `ValueSet.codeSystem.concept` as defined in FHIR DSTU2\r\nin FHIR R4.\r\n\r\nThe source element is defined as:\r\n`ValueSet.codeSystem.concept` 1..* `BackboneElement`\r\n\r\nAcross FHIR versions, the element set has been mapped as:\r\n*  DSTU2: `ValueSet.codeSystem.concept` 1..* `BackboneElement`\n*  DSTU2: `ValueSet.codeSystem.concept` 1..* `BackboneElement`\r\n\r\nFollowing are the generation technical comments:\r\nElement `ValueSet.codeSystem.concept` is part of an existing definition because parent element `ValueSet.codeSystem` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).\nCreating extension because element `ValueSet.codeSystem.concept` is a content reference and requires an extesion definition.",
  "fhirVersion": "4.0.1",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "CodeSystem"
    },
    {
      "type": "element",
      "expression": "ValueSet"
    }
  ],
  "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": "DSTU2: Concepts in the code system (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept` (new:BackboneElement)",
        "comment": "Element `ValueSet.codeSystem.concept` is part of an existing definition because parent element `ValueSet.codeSystem` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 1,
        "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": 1,
        "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:code",
        "path": "Extension.extension",
        "sliceName": "code",
        "short": "DSTU2: Code that identifies concept (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.code` (new:code)",
        "comment": "Element `ValueSet.codeSystem.concept.code` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.code` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.code` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.code` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.code` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.code` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 1,
        "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:code.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:code.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:code.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": "code",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:code.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Code that identifies concept",
        "definition": "A code - a text symbol - that uniquely identifies the concept within the code system.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ],
        "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:abstract",
        "path": "Extension.extension",
        "sliceName": "abstract",
        "short": "DSTU2: If this code is not for use as a real concept (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.abstract` (new:boolean)",
        "comment": "Element `ValueSet.codeSystem.concept.abstract` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.abstract` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.abstract` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.abstract` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.abstract` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.abstract` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.abstract` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.abstract` 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:abstract.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:abstract.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:abstract.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": "abstract",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:abstract.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "If this code is not for use as a real concept",
        "definition": "If this code is not for use as a real concept.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "boolean"
          }
        ],
        "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:display",
        "path": "Extension.extension",
        "sliceName": "display",
        "short": "DSTU2: Text to display to the user (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.display` (new:string)",
        "comment": "Element `ValueSet.codeSystem.concept.display` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.display` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.display` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.display` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.display` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.display` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.display` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.display` 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:display.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:display.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:display.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": "display",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:display.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Text to display to the user",
        "definition": "A human readable string that is the recommended default way to present this concept to a user.",
        "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:definition",
        "path": "Extension.extension",
        "sliceName": "definition",
        "short": "DSTU2: Formal definition (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.definition` (new:string)",
        "comment": "Element `ValueSet.codeSystem.concept.definition` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.definition` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.definition` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.definition` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.definition` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.definition` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.definition` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.definition` 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:definition.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:definition.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:definition.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": "definition",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:definition.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Formal definition",
        "definition": "The formal definition of the concept. The value set resource does not make formal definitions required, because of the prevalence of legacy systems. However, they are highly recommended, as without them there is no formal meaning associated with the concept.",
        "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:designation",
        "path": "Extension.extension",
        "sliceName": "designation",
        "short": "DSTU2: Additional representations for the concept (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation` (new:BackboneElement)",
        "comment": "Element `ValueSet.codeSystem.concept.designation` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Many concept definition systems support multiple representations, in multiple languages, and for multiple purposes. Element `ValueSet.codeSystem.concept.designation` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation` 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:designation.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:designation.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": 1,
        "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:designation.extension:language",
        "path": "Extension.extension.extension",
        "sliceName": "language",
        "short": "DSTU2: Human language of the designation (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation.language` (new:code)",
        "comment": "Element `ValueSet.codeSystem.concept.designation.language` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.language` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).\nIn the absence of a language, the resource language applies.",
        "requirements": "Element `ValueSet.codeSystem.concept.designation.language` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.language` 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:designation.extension:language.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:designation.extension:language.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:designation.extension:language.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": "language",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:designation.extension:language.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Human language of the designation",
        "definition": "The language this designation is defined for.",
        "comment": "In the absence of a language, the resource language applies.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ],
        "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:designation.extension:use",
        "path": "Extension.extension.extension",
        "sliceName": "use",
        "short": "DSTU2: Details how this designation would be used (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation.use` (new:Coding)",
        "comment": "Element `ValueSet.codeSystem.concept.designation.use` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.use` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).\nIf no use is provided, the designation can be assumed to be suitable for general display to a human user.",
        "requirements": "Element `ValueSet.codeSystem.concept.designation.use` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.use` 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:designation.extension:use.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:designation.extension:use.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:designation.extension:use.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": "use",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:designation.extension:use.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Details how this designation would be used",
        "definition": "A code that details how this designation would be used.",
        "comment": "If no use is provided, the designation can be assumed to be suitable for general display to a human user.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Coding"
          }
        ],
        "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:designation.extension:value",
        "path": "Extension.extension.extension",
        "sliceName": "value",
        "short": "DSTU2: The text value for this designation (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation.value` (new:string)",
        "comment": "Element `ValueSet.codeSystem.concept.designation.value` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.value` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.designation.value` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.value` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 1,
        "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:designation.extension:value.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:designation.extension:value.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:designation.extension:value.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": "value",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:designation.extension:value.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The text value for this designation",
        "definition": "The text value for this designation.",
        "min": 1,
        "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:designation.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": "designation",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:designation.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.extension:concept",
        "path": "Extension.extension",
        "sliceName": "concept",
        "short": "DSTU2: Child Concepts (is-a/contains/categorizes) (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.concept` (new:ValueSet.codeSystem.concept)",
        "comment": "Element `ValueSet.codeSystem.concept.concept` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.concept` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.concept` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.concept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.concept` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.concept` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.concept` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.concept` 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:concept.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:concept.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:concept.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": "http://hl7.org/fhir/1.0/StructureDefinition/extension-ValueSet.codeSystem.concept",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.extension:concept.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/1.0/StructureDefinition/extension-ValueSet.codeSystem.concept",
        "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": "DSTU2: Concepts in the code system (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept` (new:BackboneElement)",
        "comment": "Element `ValueSet.codeSystem.concept` is part of an existing definition because parent element `ValueSet.codeSystem` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 1,
        "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": 1,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:code",
        "path": "Extension.extension",
        "sliceName": "code",
        "short": "DSTU2: Code that identifies concept (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.code` (new:code)",
        "comment": "Element `ValueSet.codeSystem.concept.code` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.code` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.code` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.code` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.code` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.code` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:code.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "code"
      },
      {
        "id": "Extension.extension:code.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Code that identifies concept",
        "definition": "A code - a text symbol - that uniquely identifies the concept within the code system.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ]
      },
      {
        "id": "Extension.extension:abstract",
        "path": "Extension.extension",
        "sliceName": "abstract",
        "short": "DSTU2: If this code is not for use as a real concept (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.abstract` (new:boolean)",
        "comment": "Element `ValueSet.codeSystem.concept.abstract` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.abstract` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.abstract` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.abstract` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.abstract` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.abstract` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.abstract` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.abstract` 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:abstract.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "abstract"
      },
      {
        "id": "Extension.extension:abstract.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "If this code is not for use as a real concept",
        "definition": "If this code is not for use as a real concept.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "boolean"
          }
        ]
      },
      {
        "id": "Extension.extension:display",
        "path": "Extension.extension",
        "sliceName": "display",
        "short": "DSTU2: Text to display to the user (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.display` (new:string)",
        "comment": "Element `ValueSet.codeSystem.concept.display` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.display` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.display` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.display` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.display` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.display` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.display` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.display` 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:display.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "display"
      },
      {
        "id": "Extension.extension:display.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Text to display to the user",
        "definition": "A human readable string that is the recommended default way to present this concept to a user.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:definition",
        "path": "Extension.extension",
        "sliceName": "definition",
        "short": "DSTU2: Formal definition (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.definition` (new:string)",
        "comment": "Element `ValueSet.codeSystem.concept.definition` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.definition` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.definition` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.definition` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.definition` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.definition` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.definition` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.definition` 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:definition.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "definition"
      },
      {
        "id": "Extension.extension:definition.value[x]",
        "path": "Extension.extension.value[x]",
        "short": "Formal definition",
        "definition": "The formal definition of the concept. The value set resource does not make formal definitions required, because of the prevalence of legacy systems. However, they are highly recommended, as without them there is no formal meaning associated with the concept.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:designation",
        "path": "Extension.extension",
        "sliceName": "designation",
        "short": "DSTU2: Additional representations for the concept (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation` (new:BackboneElement)",
        "comment": "Element `ValueSet.codeSystem.concept.designation` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Many concept definition systems support multiple representations, in multiple languages, and for multiple purposes. Element `ValueSet.codeSystem.concept.designation` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation` 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:designation.extension",
        "path": "Extension.extension.extension",
        "slicing": {
          "discriminator": [
            {
              "type": "value",
              "path": "url"
            }
          ],
          "ordered": false,
          "rules": "open"
        },
        "min": 1,
        "max": "*",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:designation.extension:language",
        "path": "Extension.extension.extension",
        "sliceName": "language",
        "short": "DSTU2: Human language of the designation (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation.language` (new:code)",
        "comment": "Element `ValueSet.codeSystem.concept.designation.language` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.language` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).\nIn the absence of a language, the resource language applies.",
        "requirements": "Element `ValueSet.codeSystem.concept.designation.language` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.language` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.language` 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:designation.extension:language.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "language"
      },
      {
        "id": "Extension.extension:designation.extension:language.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Human language of the designation",
        "definition": "The language this designation is defined for.",
        "comment": "In the absence of a language, the resource language applies.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "code"
          }
        ]
      },
      {
        "id": "Extension.extension:designation.extension:use",
        "path": "Extension.extension.extension",
        "sliceName": "use",
        "short": "DSTU2: Details how this designation would be used (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation.use` (new:Coding)",
        "comment": "Element `ValueSet.codeSystem.concept.designation.use` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.use` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).\nIf no use is provided, the designation can be assumed to be suitable for general display to a human user.",
        "requirements": "Element `ValueSet.codeSystem.concept.designation.use` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.use` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.use` 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:designation.extension:use.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "use"
      },
      {
        "id": "Extension.extension:designation.extension:use.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "Details how this designation would be used",
        "definition": "A code that details how this designation would be used.",
        "comment": "If no use is provided, the designation can be assumed to be suitable for general display to a human user.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Coding"
          }
        ]
      },
      {
        "id": "Extension.extension:designation.extension:value",
        "path": "Extension.extension.extension",
        "sliceName": "value",
        "short": "DSTU2: The text value for this designation (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.designation.value` (new:string)",
        "comment": "Element `ValueSet.codeSystem.concept.designation.value` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.value` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.designation.value` is part of an existing definition because parent element `ValueSet.codeSystem.concept.designation` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.designation.value` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.designation.value` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.extension",
          "min": 0,
          "max": "*"
        }
      },
      {
        "id": "Extension.extension:designation.extension:value.url",
        "path": "Extension.extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "value"
      },
      {
        "id": "Extension.extension:designation.extension:value.value[x]",
        "path": "Extension.extension.extension.value[x]",
        "short": "The text value for this designation",
        "definition": "The text value for this designation.",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "string"
          }
        ]
      },
      {
        "id": "Extension.extension:designation.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "designation"
      },
      {
        "id": "Extension.extension:designation.value[x]",
        "path": "Extension.extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      },
      {
        "id": "Extension.extension:concept",
        "path": "Extension.extension",
        "sliceName": "concept",
        "short": "DSTU2: Child Concepts (is-a/contains/categorizes) (new)",
        "definition": "DSTU2: `ValueSet.codeSystem.concept.concept` (new:ValueSet.codeSystem.concept)",
        "comment": "Element `ValueSet.codeSystem.concept.concept` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.concept` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.concept` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.concept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
        "requirements": "Element `ValueSet.codeSystem.concept.concept` is part of an existing definition because parent element `ValueSet.codeSystem.concept` requires a cross-version extension.\nElement `ValueSet.codeSystem.concept.concept` has a context of CodeSystem based on following the parent source element upwards and mapping to `CodeSystem`.\nElement `ValueSet.codeSystem.concept.concept` has a context of ValueSet based on following the parent source element upwards and mapping to `ValueSet`.\nElement `ValueSet.codeSystem.concept.concept` 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:concept.url",
        "path": "Extension.extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "http://hl7.org/fhir/1.0/StructureDefinition/extension-ValueSet.codeSystem.concept"
      },
      {
        "id": "Extension.extension:concept.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/1.0/StructureDefinition/extension-ValueSet.codeSystem.concept"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "min": 0,
        "max": "0",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        }
      }
    ]
  }
}