description: The type of data entry control or structure that should be used to render the item. package_name: hl7.fhir.core derivation: constraint name: itemControl type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl'} index: 1 valueCodeableConcept: type: CodeableConcept binding: {strength: extensible, valueSet: 'http://hl7.org/fhir/ValueSet/questionnaire-item-control'} index: 2 package_version: 3.5.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl base: http://hl7.org/fhir/StructureDefinition/Extension version: null