This code system http://hl7.org/fhir/supplydelivery-supplyitemtype defines the following codes:

Code Display Definition
medication Medication Supply is a kind of medication.
device Device What is supplied (or requested) is a device.
biologicallyderivedproduct Biologically Derived Product Supply is a kind of biologically derived product.
<status value="active"/> <experimental value="false"/> <date value="2021-01-05T10:01:24+11:00"/> <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="Status of the supply delivery."/> <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/supplydelivery-supplyitemtype"/> <content value="complete"/> <concept> <code value="medication"/> <display value="Medication"/> <definition value="Supply is a kind of medication."/> </concept> <concept> <code value="device"/> <display value="Device"/> <definition value="What is supplied (or requested) is a device."/> </concept> <concept> <code value="biologicallyderivedproduct"/> <display value="Biologically Derived Product"/> <definition value="Supply is a kind of biologically derived product."/> </concept> </CodeSystem>