This code system http://terminology.hl7.org/CodeSystem/NCPDP/PrescriptionOriginCode defines many codes, but they are not represented here

 <status value="active"/> <experimental value="false"/> <date value="2020-10-29T00:00:00-04:00"/> <publisher value="National Council for Prescription Drug Programs"/> <contact> <name value="National Council for Prescription Drug Programs"/> <telecom> <system value="phone"/> <value value="480.477.1000"/> </telecom> <telecom> <system value="email"/> <value value="info@ncpdp.org"/> </telecom> </contact> <description value="Code indicating the origin of the prescription. Indicates whether the prescription was transmitted as an electronic prescription, by phone, by fax, or as a written paper copy."/> <content value="not-present"/> </CodeSystem>