description: Simple concise instructions to be read by the patient. For example “twice a day” rather than “BID.”. package_name: hl7.fhir.core derivation: constraint name: patientInstruction type: Extension elements: extension: type: Extension short: Language index: 0 slicing: slices: lang: match: {} schema: type: Extension short: Language _required: true index: 0 extensions: {} elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: lang} index: 2 valueCode: type: code binding: {strength: preferred, valueSet: 'http://hl7.org/fhir/ValueSet/languages'} index: 3 content: match: {} schema: type: Extension short: Text _required: true index: 4 extensions: {} elements: extension: {index: 5} url: type: uri pattern: {type: Uri, value: content} index: 6 valueString: {type: string, index: 7} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/devicerequest-patientInstruction'} index: 8 value: choices: [] index: 10 package_version: 3.5.0 extensions: lang: url: null type: Extension short: Language _required: true index: 0 extensions: {} elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: lang} index: 2 valueCode: type: code binding: {strength: preferred, valueSet: 'http://hl7.org/fhir/ValueSet/languages'} index: 3 content: url: null type: Extension short: Text _required: true index: 4 extensions: {} elements: extension: {index: 5} url: type: uri pattern: {type: Uri, value: content} index: 6 valueString: {type: string, index: 7} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/devicerequest-patientInstruction base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [extension]