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Narrative

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Generated Narrative: StructureDefinition ext-R3-MedicationRequest.dosageInstruction

Name	Flags	Card.	Type	Description & Constraints
Extension		0..*	Extension(4.3.0)	STU3: dosageInstruction additional types
url		1..1	uri	"http://hl7.org/fhir/3.0/StructureDefinition/extension-MedicationRequest.dosageInstruction"
value[x]		0..1	Dosage	How the medication should be taken
Documentation for this format

Source1

{
  "resourceType": "StructureDefinition",
  "id": "ext-R3-MedicationRequest.dosageInstruction",
  "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-r3.r4b"
        },
        {
          "url": "version",
          "valueString": "0.1.0"
        },
        {
          "url": "uri",
          "valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r3.r4b"
        }
      ],
      "url": "http://hl7.org/fhir/StructureDefinition/package-source"
    },
    {
      "extension": [
        {
          "url": "startFhirVersion",
          "valueCode": "4.3"
        },
        {
          "url": "endFhirVersion",
          "valueCode": "4.3"
        }
      ],
      "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-r3.r4b"
          }
        ]
      }
    },
    {
      "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-r3.r4b"
          }
        ]
      }
    }
  ],
  "url": "http://hl7.org/fhir/3.0/StructureDefinition/extension-MedicationRequest.dosageInstruction",
  "version": "0.1.0",
  "name": "ExtensionMedicationRequest_DosageInstruction",
  "title": "STU3: dosageInstruction additional types",
  "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": "STU3: `MedicationRequest.dosageInstruction` additional types (Dosage) additional types from child elements (additionalInstruction, asNeeded[x], dose[x], maxDosePerAdministration, maxDosePerLifetime, maxDosePerPeriod, method, patientInstruction, rate[x], route, sequence, site, text, timing)",
  "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 `MedicationRequest.dosageInstruction` as defined in FHIR STU3\r\nin FHIR R4B.\r\n\r\nThe source element is defined as:\r\n`MedicationRequest.dosageInstruction` 0..* `Dosage`\r\n\r\nAcross FHIR versions, the element set has been mapped as:\r\n*  STU3: `MedicationRequest.dosageInstruction` 0..* `Dosage`\n*  R4: `MedicationRequest.dosageInstruction` 0..* `Dosage`\n*  R4B: `MedicationRequest.dosageInstruction` 0..* `Dosage`\r\n\r\nFollowing are the generation technical comments:\r\nElement `MedicationRequest.dosageInstruction` is mapped to FHIR R4B element `MedicationRequest.dosageInstruction` as `SourceIsBroaderThanTarget`.\nThe mappings for `MedicationRequest.dosageInstruction` do not cover the following types: Dosage.\nThe mappings for `MedicationRequest.dosageInstruction` do not cover the following types based on type expansion: additionalInstruction, asNeeded[x], dose[x], maxDosePerAdministration, maxDosePerLifetime, maxDosePerPeriod, method, patientInstruction, rate[x], route, sequence, site, text, timing.",
  "fhirVersion": "4.3.0",
  "mapping": [
    {
      "identity": "rim",
      "uri": "http://hl7.org/v3",
      "name": "RIM Mapping"
    }
  ],
  "kind": "complex-type",
  "abstract": false,
  "context": [
    {
      "type": "element",
      "expression": "MedicationRequest.dosageInstruction"
    }
  ],
  "type": "Extension",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension|4.3.0",
  "derivation": "constraint",
  "snapshot": {
    "extension": [
      {
        "url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
        "valueString": "4.3.0"
      }
    ],
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "STU3: dosageInstruction additional types",
        "definition": "STU3: `MedicationRequest.dosageInstruction` additional types (Dosage) additional types from child elements (additionalInstruction, asNeeded[x], dose[x], maxDosePerAdministration, maxDosePerLifetime, maxDosePerPeriod, method, patientInstruction, rate[x], route, sequence, site, text, timing)",
        "comment": "Element `MedicationRequest.dosageInstruction` is mapped to FHIR R4B element `MedicationRequest.dosageInstruction` as `SourceIsBroaderThanTarget`.\nThe mappings for `MedicationRequest.dosageInstruction` do not cover the following types: Dosage.\nThe mappings for `MedicationRequest.dosageInstruction` do not cover the following types based on type expansion: additionalInstruction, asNeeded[x], dose[x], maxDosePerAdministration, maxDosePerLifetime, maxDosePerPeriod, method, patientInstruction, rate[x], route, sequence, site, text, timing.\nThere are examples where a medication request may include the option of an oral dose or an Intravenous or Intramuscular dose.  For example, \"Ondansetron 8mg orally or IV twice a day as needed for nausea\" or \"Compazine® (prochlorperazine) 5-10mg PO or 25mg PR bid prn nausea or vomiting\".  In these cases, two medication requests would be created that could be grouped together.  The decision on which dose and route of administration to use is based on the patient's condition at the time the dose is needed.",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension",
          "min": 0,
          "max": "*"
        },
        "condition": [
          "ele-1"
        ],
        "constraint": [
          {
            "key": "ele-1",
            "severity": "error",
            "human": "All FHIR elements must have a @value or children unless an empty Parameters resource",
            "expression": "hasValue() or (children().count() > id.count()) or $this is Parameters",
            "xpath": "@value|f:*|h:div|self::f:Parameters",
            "source": "http://hl7.org/fhir/StructureDefinition/Element|4.3.0"
          },
          {
            "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|4.3.0"
          }
        ],
        "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": "id"
              }
            ],
            "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",
          "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|4.3.0"
          },
          {
            "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|4.3.0"
          }
        ],
        "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/3.0/StructureDefinition/extension-MedicationRequest.dosageInstruction",
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "short": "How the medication should be taken",
        "definition": "Indicates how the medication is to be used by the patient.",
        "comment": "There are examples where a medication request may include the option of an oral dose or an Intravenous or Intramuscular dose.  For example, \"Ondansetron 8mg orally or IV twice a day as needed for nausea\" or \"Compazine® (prochlorperazine) 5-10mg PO or 25mg PR bid prn nausea or vomiting\".  In these cases, two medication requests would be created that could be grouped together.  The decision on which dose and route of administration to use is based on the patient's condition at the time the dose is needed.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Dosage"
          }
        ],
        "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|4.3.0"
          }
        ],
        "isModifier": false,
        "isSummary": false,
        "mapping": [
          {
            "identity": "rim",
            "map": "N/A"
          }
        ]
      }
    ]
  },
  "differential": {
    "element": [
      {
        "id": "Extension",
        "path": "Extension",
        "short": "STU3: dosageInstruction additional types",
        "definition": "STU3: `MedicationRequest.dosageInstruction` additional types (Dosage) additional types from child elements (additionalInstruction, asNeeded[x], dose[x], maxDosePerAdministration, maxDosePerLifetime, maxDosePerPeriod, method, patientInstruction, rate[x], route, sequence, site, text, timing)",
        "comment": "Element `MedicationRequest.dosageInstruction` is mapped to FHIR R4B element `MedicationRequest.dosageInstruction` as `SourceIsBroaderThanTarget`.\nThe mappings for `MedicationRequest.dosageInstruction` do not cover the following types: Dosage.\nThe mappings for `MedicationRequest.dosageInstruction` do not cover the following types based on type expansion: additionalInstruction, asNeeded[x], dose[x], maxDosePerAdministration, maxDosePerLifetime, maxDosePerPeriod, method, patientInstruction, rate[x], route, sequence, site, text, timing.\nThere are examples where a medication request may include the option of an oral dose or an Intravenous or Intramuscular dose.  For example, \"Ondansetron 8mg orally or IV twice a day as needed for nausea\" or \"Compazine® (prochlorperazine) 5-10mg PO or 25mg PR bid prn nausea or vomiting\".  In these cases, two medication requests would be created that could be grouped together.  The decision on which dose and route of administration to use is based on the patient's condition at the time the dose is needed.",
        "min": 0,
        "max": "*",
        "base": {
          "path": "Extension",
          "min": 0,
          "max": "*"
        },
        "isModifier": false
      },
      {
        "id": "Extension.url",
        "path": "Extension.url",
        "min": 1,
        "max": "1",
        "base": {
          "path": "Extension.url",
          "min": 1,
          "max": "1"
        },
        "fixedUri": "http://hl7.org/fhir/3.0/StructureDefinition/extension-MedicationRequest.dosageInstruction"
      },
      {
        "id": "Extension.value[x]",
        "path": "Extension.value[x]",
        "short": "How the medication should be taken",
        "definition": "Indicates how the medication is to be used by the patient.",
        "comment": "There are examples where a medication request may include the option of an oral dose or an Intravenous or Intramuscular dose.  For example, \"Ondansetron 8mg orally or IV twice a day as needed for nausea\" or \"Compazine® (prochlorperazine) 5-10mg PO or 25mg PR bid prn nausea or vomiting\".  In these cases, two medication requests would be created that could be grouped together.  The decision on which dose and route of administration to use is based on the patient's condition at the time the dose is needed.",
        "min": 0,
        "max": "1",
        "base": {
          "path": "Extension.value[x]",
          "min": 0,
          "max": "1"
        },
        "type": [
          {
            "code": "Dosage"
          }
        ]
      }
    ]
  }
}