description: null package_name: accdr.fhir.ig.pkg derivation: constraint name: LoincOntologyAxis type: Extension elements: url: pattern: {type: Uri, value: 'http://ontariohealth.ca/fhir/StructureDefinition/ext-loinc-ontology-axis'} index: 0 value: choices: [valueCoding] index: 2 valueCoding: {type: Coding, choiceOf: value, index: 3} value[x]: elements: system: pattern: {type: Uri, value: 'http://loinc.org'} index: 4 code: {index: 5} display: {index: 6} required: [display, system, code] package_version: 0.9.0-alpha-0.9.8 class: extension kind: complex-type url: http://ontariohealth.ca/fhir/StructureDefinition/ext-loinc-ontology-axis base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valueCoding, value]