description: null package_name: uk.nhsdigital.r4.test derivation: constraint name: ExtensionEPSPrescription type: Extension elements: extension: index: 0 slicing: rules: open discriminator: - {path: url, type: value} min: null slices: courseOfTherapyType: match: {url: courseOfTherapyType} schema: index: 1 elements: url: pattern: {type: Uri, value: courseOfTherapyType} index: 2 value: choices: [valueCoding] index: 4 valueCoding: {type: Coding, choiceOf: value, index: 5} url: pattern: {type: Uri, value: 'https://fhir.nhs.uk/StructureDefinition/Extension-EPS-Prescription'} index: 6 value: choices: [] index: 8 package_version: 2.8.8-prerelease extensions: courseOfTherapyType: url: courseOfTherapyType index: 1 elements: url: pattern: {type: Uri, value: courseOfTherapyType} index: 2 value: choices: [valueCoding] index: 4 valueCoding: {type: Coding, choiceOf: value, index: 5} class: extension kind: complex-type url: https://fhir.nhs.uk/StructureDefinition/Extension-EPS-Prescription base: http://hl7.org/fhir/StructureDefinition/Extension version: null