description: Describes the clinical usage of the artifact. package_name: hl7.fhir.uv.extensions derivation: constraint name: ArtifactUsage type: Extension elements: url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/artifact-usage'} index: 0 value: choices: [valueMarkdown] index: 2 valueMarkdown: {type: markdown, choiceOf: value, index: 3} package_version: 5.3.0-ballot-tc1 class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/artifact-usage base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot-tc1 required: [valueMarkdown, value]