description: This cross-version extension represents ChargeItemDefinition.applicability.effectivePeriod from http://hl7.org/fhir/StructureDefinition/ChargeItemDefinition|5.0.0 for use in FHIR R4. package_name: hl7.fhir.uv.xver-r5.r4.r4b derivation: constraint name: Ext_R5_ChargeItemDefinition_ap_effectivePeriod type: Extension elements: url: base: {max: '1', min: 1, path: Extension.url} pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-ChargeItemDefinition.applicability.effectivePeriod'} index: 0 value: base: {max: '1', min: 0, path: 'Extension.value[x]'} short: When the charge item definition is expected to be used choices: [valuePeriod] index: 2 valuePeriod: base: {max: '1', min: 0, path: 'Extension.value[x]'} type: Period short: When the charge item definition is expected to be used 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-ChargeItemDefinition.applicability.effectivePeriod base: http://hl7.org/fhir/StructureDefinition/Extension|4.0.1 version: 0.0.1-snapshot-2 required: [url]