description: A comment that explains how this code is used in this context (where the value set is expected to be used). package_name: rs/nictiz.fhir.nl.stu3.geboortezorg derivation: constraint name: concept-comments type: Extension elements: url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/valueset-concept-comments'} type: uri index: 0 value: choices: [valueString] index: 2 slicing: slices: valueString: match: {} schema: choices: [valueString] _required: true index: 2 min: 1 valueString: type: string choiceOf: value index: 3 slicing: slices: valueString: match: {} schema: {type: string, choiceOf: value, _required: true, index: 3} min: 1 package_version: 1.2.0 class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/valueset-concept-comments base: http://hl7.org/fhir/StructureDefinition/Extension version: 3.0.2 required: [value, valueString]