description: 'R4B: `PlanDefinition.action.timing[x]` additional types (Age, Period, Range, Timing)' package_name: hl7.fhir.uv.xver-r4b.r3 derivation: constraint name: ExtensionPlanDefinition_Action_Timing type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/4.3/StructureDefinition/extension-PlanDefinition.action.timing'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: When the action should take place choices: [valueAge, valuePeriod, valueRange, valueTiming] index: 2 valueAge: short: When the action should take place type: Age base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 3 valuePeriod: short: When the action should take place type: Period base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 4 valueRange: short: When the action should take place type: Range base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 5 valueTiming: short: When the action should take place type: Timing base: {max: '1', min: 0, path: 'Extension.value[x]'} choiceOf: value index: 6 package_version: 0.1.0 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: 0.1.0 required: [url]