description: 'HIQA EP 3.5.9.2 ''Do Not Extend'' (Optional 0..1): true when the prescriber does not want the pharmacist to extend the prescription beyond its validity period. HIQA: pharmacists can extend a six-month prescription for up to a further six months.' package_name: nostalgic-ie.fhir.core derivation: constraint name: IECoreDoNotExtend type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-do-not-extend'} index: 1 value: choices: [valueBoolean] index: 3 valueBoolean: {type: boolean, choiceOf: value, index: 4} package_version: 0.2.0 extensions: {} class: extension kind: complex-type url: https://hl7-ie.github.io/ie-core/fhir/ie/core/StructureDefinition/ie-core-do-not-extend base: http://hl7.org/fhir/StructureDefinition/Extension version: 0.2.0 required: [value, valueBoolean]