description: This cross-version extension represents Device.definition from http://hl7.org/fhir/StructureDefinition/Device|5.0.0 for use in FHIR R4B. package_name: hl7.fhir.uv.xver derivation: constraint name: ext_R5_Device_definition type: Extension elements: value: base: {path: 'Extension.value[x]'} short: The reference to the definition for the device choices: [valueCodeableReference] index: 1 valueCodeableReference: base: {path: 'Extension.value[x]'} type: CodeableReference short: The reference to the definition for the device choiceOf: value index: 2 url: pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-Device.definition'} index: 3 package_version: r5.r4b-0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/5.0/StructureDefinition/extension-Device.definition base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]