description: A set of codes that defines what the server is capable of. package_name: hl7.fhir.r5.core derivation: constraint name: capabilities type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://fhir-registry.smarthealthit.org/StructureDefinition/capabilities'} index: 1 value: choices: [valueCode] index: 3 valueCode: {type: code, choiceOf: value, index: 4} package_version: 5.0.0-snapshot3 extensions: {} class: extension kind: complex-type url: http://fhir-registry.smarthealthit.org/StructureDefinition/capabilities base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.0.0-snapshot3 required: [valueCode, value]