description: 'STU3: `Specimen.container.additive[x]` (new:CodeableConcept, Reference(Substance))'
package_name: hl7.fhir.uv.xver-r3.r5
derivation: constraint
name: ExtensionSpecimen_Container_Additive
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/3.0/StructureDefinition/extension-Specimen.container.additive'}
    index: 0
  value:
    short: Additive associated with container
    choices: [valueCodeableConcept, valueReference]
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    index: 2
  valueCodeableConcept:
    short: Additive associated with container
    type: CodeableConcept
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 3
  valueReference:
    short: Additive associated with container
    refers: ['http://hl7.org/fhir/3.0/StructureDefinition/profile-Substance|0.1.0', 'http://hl7.org/fhir/StructureDefinition/Substance|5.0.0']
    type: Reference
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 4
package_version: 0.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/3.0/StructureDefinition/extension-Specimen.container.additive
base: http://hl7.org/fhir/StructureDefinition/Extension|5.0.0
version: 0.1.0
required: [url]