This case-sensitive code system http://terminology.hl7.org/CodeSystem/expansion-parameter-source
defines the following codes:
Code | Display | Definition |
input | Client Input | The parameter was supplied by the client in the $expand request. |
server | Server Engine | The parameter was added by the expansion engine on the server. |
codesystem | Code System | The parameter was added from one the code systems used in the $expand operation. |