description: The year portion (YYYY) of the partial date. (Extension)
package_name: hl7.fhir.us.vrdr.r4
derivation: constraint
name: DateYear
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/vrdr/StructureDefinition/Date-Year'}
    index: 1
  value:
    maxValueInteger: 9998
    minValueInteger: 0
    choices: [valueUnsignedInt]
    index: 3
  valueUnsignedInt: {type: unsignedInt, maxValueInteger: 9998, minValueInteger: 0, choiceOf: value, index: 4}
  value[x]:
    extensions:
      dataabsent: {url: 'http://hl7.org/fhir/StructureDefinition/data-absent-reason', min: 0, max: 1, type: Extension, index: 6}
    elements:
      extension:
        index: 5
        slicing:
          rules: open
          ordered: false
          discriminator:
          - {path: url, type: value}
          min: null
          slices:
            dataabsent:
              match: {url: null}
              schema: {type: Extension, url: 'http://hl7.org/fhir/StructureDefinition/data-absent-reason', index: 6}
              min: 0
              max: 1
package_version: 2.2.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/vrdr/StructureDefinition/Date-Year
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.2.0
required: [value, valueUnsignedInt]