description: A numbered box located in a post station.
package_name: hl7.fhir.r5.core
derivation: constraint
name: ADXP-postBox
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-ADXP-postBox'}
    index: 1
  value:
    choices: [valueString]
    index: 3
  valueString: {type: string, choiceOf: value, index: 4}
package_version: 4.2.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/iso21090-ADXP-postBox
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.2.0
required: [valueString, value]