description: This cross-version extension represents ProcedureRequest.definition from http://hl7.org/fhir/StructureDefinition/ProcedureRequest|3.0.2 for use in FHIR R4B. package_name: hl7.fhir.uv.xver-r3.r4b derivation: constraint name: ext_R3_ProcedureRequest_definition type: Extension elements: value: base: {path: 'Extension.value[x]'} short: Protocol or definition choices: [valueReference] index: 1 valueReference: base: {path: 'Extension.value[x]'} type: Reference short: Protocol or definition choiceOf: value refers: ['http://hl7.org/fhir/StructureDefinition/ActivityDefinition', 'http://hl7.org/fhir/StructureDefinition/PlanDefinition'] index: 2 url: pattern: {type: uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-ProcedureRequest.definition'} type: uri index: 3 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/3.0/StructureDefinition/extension-ProcedureRequest.definition base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]