description: Notes package_name: ca.on.ehr.r4 derivation: constraint name: SourceOfNote type: Extension elements: url: pattern: {type: Uri, value: 'http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-note-source'} index: 0 value: mustSupport: true choices: [valueCodeableConcept] index: 2 valueCodeableConcept: {type: CodeableConcept, mustSupport: true, choiceOf: value, index: 3} value[x]: elements: coding: mustSupport: true index: 4 elements: system: pattern: {type: Uri, value: 'http://terminology.hl7.org/CodeSystem/v2-0105'} mustSupport: true index: 5 code: {mustSupport: true, index: 6} display: {mustSupport: true, index: 7} required: [display, system, code] required: [coding] package_version: 1.0.0-snapshot2 class: extension kind: complex-type url: http://ehealthontario.ca/fhir/StructureDefinition/ca-on-lab-ext-note-source base: http://hl7.org/fhir/StructureDefinition/Extension version: null