description: Indicates the type of referral (e.g., initial (external) or internal ). package_name: ca.on.oh.mha derivation: constraint name: ReferralType type: Extension elements: url: pattern: {type: Uri, value: 'https://ontariohealth.ca/fhir/StructureDefinition/ca-on-mha-ext-ReferralType'} index: 0 value: choices: [valueCode] index: 2 valueCode: {type: code, choiceOf: value, index: 3} package_version: pds-0.9.0-alpha-1.2 class: extension kind: complex-type url: https://ontariohealth.ca/fhir/StructureDefinition/ca-on-mha-ext-ReferralType base: http://hl7.org/fhir/StructureDefinition/Extension version: null