This code system http://hl7.org/fhir/clinical-use-definition-type defines the following codes:

Code Display Definition
indication Indication A reason for giving the medicaton.
contraindication Contraindication A reason for not giving the medicaition.
interaction Interaction Interactions between the medication and other substances.
undesirable-effect Undesirable Effect Side effects or adverse effects associated with the medication.
warning Warning A general warning or issue that is not specifically one of the other types.
<status value="draft"/> <experimental value="false"/> <date value="2021-01-05T09:01:24+10:00"/> <publisher value="Biomedical Research and Regulation"/> <contact> <name value="Biomedical Research and Regulation"/> <telecom> <system value="url"/> <value value="http://www.hl7.org/Special/committees/rcrim"/> </telecom> </contact> <description value="Overall defining type of this clinical use definition."/> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> <code value="001"/> <display value="World"/> </coding> </jurisdiction> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/clinical-use-definition-type|5.0.0"/> <content value="complete"/> <concept> <code value="indication"/> <display value="Indication"/> <definition value="A reason for giving the medication."/> </concept> <concept> <code value="contraindication"/> <display value="Contraindication"/> <definition value="A reason for not giving the medication."/> </concept> <concept> <code value="interaction"/> <display value="Interaction"/> <definition value="Interactions between the medication and other substances."/> </concept> <concept> <code value="undesirable-effect"/> <display value="Undesirable Effect"/> <definition value="Side effects or adverse effects associated with the medication."/> </concept> <concept> <code value="warning"/> <display value="Warning"/> <definition value="A general warning or issue that is not specifically one of the other types."/> </concept> </CodeSystem>