description: Provides a textual description of the strength of the active ingredient(s) in the medication. This extension is published by PrescribeIT and recreated in this project to ease validation package_name: ca.infoway.io.psca derivation: constraint name: ExtMedicationStrengthDescription type: Extension elements: url: pattern: {type: Uri, value: 'http://prescribeit.ca/fhir/StructureDefinition/ext-medication-strength-description'} index: 0 value: choices: [valueString] index: 2 valueString: {type: string, choiceOf: value, index: 3} package_version: 2.0.3-DFT-Ballot class: extension kind: complex-type url: http://prescribeit.ca/fhir/StructureDefinition/ext-medication-strength-description base: http://hl7.org/fhir/StructureDefinition/Extension version: 1.0.0 required: [valueString, value]