description: Descriptive topics related to the content of the artifact. Topics provide a high-level categorization of the artifact that can be useful for filtering and searching.
package_name: hl7.fhir.r5.examples
derivation: constraint
name: topic
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/artifact-topic'}
    index: 1
  value:
    choices: [valueCodeableConcept]
    index: 3
  valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4}
package_version: 5.0.0-snapshot2
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/artifact-topic
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.6.0
required: [value, valueCodeableConcept]