description: Provides a coded expression for the content represented in a string. package_name: hl7.fhir.uv.extensions derivation: constraint name: CodedString type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/iso21090-codedString'} index: 1 value: choices: [valueCoding] index: 3 valueCoding: {type: Coding, choiceOf: value, index: 4} package_version: 5.1.0-snapshot1 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/iso21090-codedString base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.1.0-snapshot1 required: [valueCoding, value]