description: This cross-version extension represents Condition.onset[x] from http://hl7.org/fhir/StructureDefinition/Condition|1.0.2 for use in FHIR R4B.
package_name: hl7.fhir.uv.xver-r2.r4b.r4
derivation: constraint
name: Ext_R2_Condition_onset
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/1.0/StructureDefinition/extension-Condition.onset'}
    index: 0
  value:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    short: Estimated or actual date,  date-time, or age
    choices: [valueAge, valueDateTime, valuePeriod, valueRange, valueString]
    index: 2
  valueAge:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    type: Age
    short: Estimated or actual date,  date-time, or age
    choiceOf: value
    index: 3
  valueDateTime:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    type: dateTime
    short: Estimated or actual date,  date-time, or age
    choiceOf: value
    index: 4
  valuePeriod:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    type: Period
    short: Estimated or actual date,  date-time, or age
    choiceOf: value
    index: 5
  valueRange:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    type: Range
    short: Estimated or actual date,  date-time, or age
    choiceOf: value
    index: 6
  valueString:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    type: string
    short: Estimated or actual date,  date-time, or age
    choiceOf: value
    index: 7
package_version: 0.0.1-snapshot-2
class: extension
kind: complex-type
url: http://hl7.org/fhir/1.0/StructureDefinition/extension-Condition.onset
base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0
version: 0.0.1-snapshot-2
required: [url]