description: 'A human readable name for the region of interest. Typically Exon #, Intron # or other. NOTE: This is not standardized and is mainly for convenience and display purposes. LOINC Code: ([47999-8](http://loinc.org/47999-8)).' package_name: hl7.fhir.uv.extensions.r5 derivation: constraint name: DNARegionName type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/observation-geneticsDNARegionName'} type: uri index: 1 value: choices: [valueString] index: 3 valueString: {type: string, choiceOf: value, index: 4} package_version: 5.3.0-ballot extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/observation-geneticsDNARegionName base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.3.0-ballot required: [value, valueString]