description: A human language representation of the concept (resource/element), as a url that is a reference to a portion of the narrative of a resource ([DomainResource.text](narrative.html) or [Composition.section.text](composition-definitions.html#Composition.section.text)). package_name: rs/hl7.fhir.uv.extensions derivation: constraint name: NarrativeLink type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/narrativeLink'} type: uri index: 1 value: choices: [valueUrl] index: 3 valueUrl: {type: url, choiceOf: value, index: 4} package_version: 5.1.0-cibuild extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/narrativeLink base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.1.0-cibuild required: [value, valueUrl]