This case-sensitive code system http://terminology.hl7.org/CodeSystem/citation-classification-type defines the following codes:
| Code | Display | Definition |
| citation-source | Citation Source | Citation repository where this citation was created or copied from |
| medline-owner | MEDLINE Citation Owner | The party responsible for creating and validating the MEDLINE citation |
| fevir-platform-use | FEvIR Platform Use | Used for Citation sharing on the Fast Evidence Interoperability Resources (FEvIR) Platform |