This code system http://terminology.hl7.org/CodeSystem/definition-topic defines the following codes:

CodeDisplayDefinition
treatment TreatmentThe definition is related to treatment of the patient.
education EducationThe definition is related to education of the patient.
assessment AssessmentThe definition is related to assessment of the patient.
 <status value="draft"/> <experimental value="false"/> <date value="2020-04-09T21:10:28+00:00"/> <publisher value="HL7 (FHIR Project)"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> <telecom> <system value="email"/> <value value="fhir@lists.hl7.org"/> </telecom> </contact> <description value="High-level categorization of the definition, used for searching, sorting, and filtering."/> <caseSensitive value="true"/> <valueSet value="http://terminology.hl7.org/ValueSet/definition-topic"/> <content value="complete"/> <concept> <code value="treatment"/> <display value="Treatment"/> <definition value="The definition is related to treatment of the patient."/> </concept> <concept> <code value="education"/> <display value="Education"/> <definition value="The definition is related to education of the patient."/> </concept> <concept> <code value="assessment"/> <display value="Assessment"/> <definition value="The definition is related to assessment of the patient."/> </concept> </CodeSystem>