description: When present, this extension indicates that the date of a period start or end is uncertain and falls within its own period.
package_name: hl7.fhir.uv.extensions
derivation: constraint
name: UncertainDate
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/timing-uncertainDate'}
    index: 1
  value:
    choices: [valuePeriod]
    index: 3
  valuePeriod: {type: Period, choiceOf: value, index: 4}
package_version: 5.1.0-snapshot1
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/timing-uncertainDate
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.1.0-snapshot1
required: [valuePeriod, value]