description: This supports the recording of effective start and end dates.
package_name: fhir.r4.ukcore.stu3.currentbuild
derivation: constraint
name: ExtensionUKCoreEffectivePeriod
type: Extension
elements:
  url:
    pattern: {type: uri, value: 'https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-EffectivePeriod'}
    type: uri
    index: 0
  value:
    short: Effective Date Period
    choices: [valuePeriod]
    index: 2
  valuePeriod: {type: Period, short: Effective Date Period, choiceOf: value, index: 3}
package_version: 0.21.0-pre-release
class: extension
kind: complex-type
url: https://fhir.hl7.org.uk/StructureDefinition/Extension-UKCore-EffectivePeriod
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.1.0
required: [value, valuePeriod]