description: Record of the date and/or time of the first exposure to the Substance for this Reaction Event.
package_name: hl7.fhir.core
derivation: constraint
name: exposureDate
type: Extension
elements:
  extension: {index: 0}
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/openEHR-exposureDate'}
    index: 1
  valueDateTime: {type: dateTime, index: 2}
package_version: 3.2.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/openEHR-exposureDate
base: http://hl7.org/fhir/StructureDefinition/Extension
version: null