http://hl7.org/fhir/StructureDefinition/cqf-systemUserType|5.2.0

The type of user initiating the request, e.g. patient, healthcare provider, or specific type of healthcare provider (physician, nurse, etc.). DEPRECATED: This extension was initially used to model decision support context. This information is now handled as part of CDS Hooks and Clinical Reasoning.
typedestination
baseDefinitionhttp://hl7.org/fhir/StructureDefinition/Extension
typehttp://hl7.org/fhir/StructureDefinition/Extension
Extension.value[x].typehttp://hl7.org/fhir/StructureDefinition/CodeableConcept