FHIR IG analytics| Package | hl7.fhir.uv.xver-r4b.r4 |
| Resource Type | StructureDefinition |
| Id | StructureDefinition-ext-R4B-Citation.purpose.json |
| FHIR Version | R4 |
| Source | http://hl7.org/fhir/uv/xver-r4b.r4/0.1.0/StructureDefinition-ext-R4B-Citation.purpose.html |
| URL | http://hl7.org/fhir/4.3/StructureDefinition/extension-Citation.purpose |
| Version | 0.1.0 |
| Status | active |
| Date | 2026-03-17T21:02:03.8104715+00:00 |
| Name | ExtensionCitation_Purpose |
| Title | R4B: Why this citation is defined (new) |
| Realm | uv |
| Authority | hl7 |
| Description | R4B: `Citation.purpose` (new:markdown) |
| Purpose | This extension is part of the cross-version definitions generated to enable use of the element `Citation.purpose` as defined in FHIR R4B in FHIR R4. The source element is defined as: `Citation.purpose` 0..1 `markdown` Following are the generation technical comments: Element `Citation.purpose` is not mapped to FHIR R4, since FHIR R4B `Citation` is not mapped. Element `Citation.purpose` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). |
| Type | Extension |
| Kind | complex-type |
| ConceptMap | ||
| hl7.fhir.uv.xver-r4b.r4#0.1.0 | R4B-Citation-element-map-to-R4 | Cross-version mapping for FHIR R4B Citation to FHIR R4 Basic |
| hl7.fhir.uv.xver-r4b.r3#0.1.0 | R4B-Citation-element-map-to-R3 | Cross-version mapping for FHIR R4B Citation to FHIR STU3 Basic |
No resources found
No extension usage examples found
Note: links and images are rebased to the (stated) source
Generated Narrative: StructureDefinition ext-R4B-Citation.purpose
| Name | Flags | Card. | Type | Description & Constraints |
|---|---|---|---|---|
  Extension | 0..1 | Extension(4.0.1) | R4B: Why this citation is defined (new) | |
 url | 1..1 | uri | "http://hl7.org/fhir/4.3/StructureDefinition/extension-Citation.purpose" | |
  value[x] | 0..1 | markdown | Why this citation is defined | |
| Documentation for this format | ||||
FHIR
FHIRsmith{
"resourceType": "StructureDefinition",
"id": "ext-R4B-Citation.purpose",
"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-r4b.r4"
},
{
"url": "version",
"valueString": "0.1.0"
},
{
"url": "uri",
"valueUri": "http://hl7.org/fhir/uv/xver/ImplementationGuide/hl7.fhir.uv.xver-r4b.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-r4b.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-r4b.r4"
}
]
}
}
],
"url": "http://hl7.org/fhir/4.3/StructureDefinition/extension-Citation.purpose",
"version": "0.1.0",
"name": "ExtensionCitation_Purpose",
"title": "R4B: Why this citation is defined (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": "R4B: `Citation.purpose` (new:markdown)",
"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 `Citation.purpose` as defined in FHIR R4B\r\nin FHIR R4.\r\n\r\nThe source element is defined as:\r\n`Citation.purpose` 0..1 `markdown`\r\n\r\nFollowing are the generation technical comments:\r\nElement `Citation.purpose` is not mapped to FHIR R4, since FHIR R4B `Citation` is not mapped.\nElement `Citation.purpose` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).",
"fhirVersion": "4.0.1",
"mapping": [
{
"identity": "rim",
"uri": "http://hl7.org/v3",
"name": "RIM Mapping"
}
],
"kind": "complex-type",
"abstract": false,
"context": [
{
"type": "element",
"expression": "Basic"
}
],
"type": "Extension",
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension|4.0.1",
"derivation": "constraint",
"snapshot": {
"extension": [
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
"valueString": "4.0.1"
}
],
"element": [
{
"id": "Extension",
"path": "Extension",
"short": "R4B: Why this citation is defined (new)",
"definition": "R4B: `Citation.purpose` (new:markdown)",
"comment": "Element `Citation.purpose` is not mapped to FHIR R4, since FHIR R4B `Citation` is not mapped.\nElement `Citation.purpose` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).\nThis element does not describe the usage of the citation. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this citation.",
"min": 0,
"max": "1",
"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",
"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.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/4.3/StructureDefinition/extension-Citation.purpose",
"isModifier": false,
"isSummary": false,
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Extension.value[x]",
"path": "Extension.value[x]",
"short": "Why this citation is defined",
"definition": "Explanation of why this citation is needed and why it has been designed as it has.",
"comment": "This element does not describe the usage of the citation. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this citation.",
"min": 0,
"max": "1",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "markdown"
}
],
"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": "R4B: Why this citation is defined (new)",
"definition": "R4B: `Citation.purpose` (new:markdown)",
"comment": "Element `Citation.purpose` is not mapped to FHIR R4, since FHIR R4B `Citation` is not mapped.\nElement `Citation.purpose` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).\nThis element does not describe the usage of the citation. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this citation.",
"min": 0,
"max": "1",
"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/4.3/StructureDefinition/extension-Citation.purpose"
},
{
"id": "Extension.value[x]",
"path": "Extension.value[x]",
"short": "Why this citation is defined",
"definition": "Explanation of why this citation is needed and why it has been designed as it has.",
"comment": "This element does not describe the usage of the citation. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this citation.",
"min": 0,
"max": "1",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "markdown"
}
]
}
]
}
}