description: null package_name: ca.on.oh.mha.pds derivation: constraint name: MHADataAbsentReason type: Extension elements: url: pattern: {type: Uri, value: 'http://ontariohealth.ca/fhir/StructureDefinition/ext-ca-on-mha-data-absent-reason'} index: 0 value: mustSupport: true choices: [valueCoding] index: 2 valueCoding: {type: Coding, mustSupport: true, choiceOf: value, index: 3} value[x]: elements: system: {mustSupport: true, index: 4} code: {mustSupport: true, index: 5} display: {mustSupport: true, index: 6} required: [display, system, code] package_version: 2.0.0-alpha-preview-0.1 class: extension kind: complex-type url: http://ontariohealth.ca/fhir/StructureDefinition/ext-ca-on-mha-data-absent-reason base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0