description: This cross-version extension represents PlanDefinition.action.timing[x] from http://hl7.org/fhir/StructureDefinition/PlanDefinition|4.3.0 for use in FHIR R5. package_name: hl7.fhir.uv.xver-r4b.r5 derivation: constraint name: ext_R4B_PlanDefinition_ac_timing type: Extension elements: value: base: {path: 'Extension.value[x]'} short: When the action should take place choices: [valueDateTime, valueAge, valuePeriod, valueDuration, valueRange, valueTiming] index: 1 valueDateTime: base: {path: 'Extension.value[x]'} type: dateTime short: When the action should take place choiceOf: value index: 2 valueAge: base: {path: 'Extension.value[x]'} type: Age short: When the action should take place choiceOf: value index: 3 valuePeriod: base: {path: 'Extension.value[x]'} type: Period short: When the action should take place choiceOf: value index: 4 valueDuration: base: {path: 'Extension.value[x]'} type: Duration short: When the action should take place choiceOf: value index: 5 valueRange: base: {path: 'Extension.value[x]'} type: Range short: When the action should take place choiceOf: value index: 6 valueTiming: base: {path: 'Extension.value[x]'} type: Timing short: When the action should take place choiceOf: value index: 7 url: pattern: {type: uri, value: 'http://hl7.org/fhir/4.3/StructureDefinition/extension-PlanDefinition.action.timing'} type: uri index: 8 package_version: 0.0.1-snapshot-1 class: extension kind: complex-type url: http://hl7.org/fhir/4.3/StructureDefinition/extension-PlanDefinition.action.timing base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.0.1-snapshot-1 required: [url]