description: This cross-version extension represents Appointment.serviceType from http://hl7.org/fhir/StructureDefinition/Appointment|5.0.0 for use in FHIR R4B. package_name: hl7.fhir.uv.xver-r5.r4b derivation: constraint name: Ext_R5_Appointment_serviceType type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-Appointment.serviceType'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: The specific service that is to be performed during this appointment choices: [valueCodeableReference] index: 2 valueCodeableReference: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: CodeableReference short: The specific service that is to be performed during this appointment choiceOf: value index: 3 package_version: 0.0.1-snapshot-2 class: extension kind: complex-type url: http://hl7.org/fhir/5.0/StructureDefinition/extension-Appointment.serviceType base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0 version: 0.0.1-snapshot-2 required: [url]