description: Clinically Relevant Time Code package_name: hl7.fhir.cz.lab derivation: constraint name: CZ_LabClinicallyRelevantTime type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://hl7.cz/fhir/lab/StructureDefinition/cz-lab-clinically-relevant-time'} index: 1 value: choices: [valueCoding] index: 3 valueCoding: {type: Coding, choiceOf: value, index: 4} value[x]: elements: system: {index: 5} code: {index: 6} required: [system, code] package_version: 1.0.0 extensions: {} class: extension kind: complex-type url: https://hl7.cz/fhir/lab/StructureDefinition/cz-lab-clinically-relevant-time base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueCoding, value]