This code system http://terminology.hl7.org/CodeSystem/medicationrequest-admin-location defines the following codes:

CodeDisplayDefinition
inpatient InpatientIncludes requests for medications to be administered or consumed in an inpatient or acute care setting
outpatient OutpatientIncludes requests for medications to be administered or consumed in an outpatient setting (for example, Emergency Department, Outpatient Clinic, Outpatient Surgery, Doctor's office)
community CommunityIncludes requests for medications to be administered or consumed by the patient in their home (this would include long term care or nursing homes, hospices, etc.)
<status value="draft"/> <experimental value="false"/> <date value="2022-11-04T18:21:49-06:00"/> <publisher value="FHIR Project team"/> <contact> <telecom> <system value="url"/> <value value="http://hl7.org/fhir"/> </telecom> </contact> <description value="MedicationRequest Administration Location Codes"/> <caseSensitive value="true"/> <valueSet value="http://terminology.hl7.org/ValueSet/medicationrequest-admin-location"/> <content value="complete"/> <concept> <code value="inpatient"/> <display value="Inpatient"/> <definition value="Includes requests for medications to be administered or consumed in an inpatient or acute care setting"/> </concept> <concept> <code value="outpatient"/> <display value="Outpatient"/> <definition value="Includes requests for medications to be administered or consumed in an outpatient setting (for example, Emergency Department, Outpatient Clinic, Outpatient Surgery, Doctor's office)"/> </concept> <concept> <code value="community"/> <display value="Community"/> <definition value="Includes requests for medications to be administered or consumed by the patient in their home (this would include long term care or nursing homes, hospices, etc.)"/> </concept> </CodeSystem>