description: Provides a coded expression for the content represented in a string. package_name: hl7.fhir.uv.extensions.r3 derivation: constraint name: SCCoding type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-SC-coding'} type: uri index: 1 value: choices: [valueCoding] index: 3 valueCoding: {type: Coding, choiceOf: value, index: 4} package_version: 5.3.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/iso21090-SC-coding base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot required: [value, valueCoding]