In some organ transplantation services and rarely in transfusion services a donor will be a target participant in the service. However, in most cases transplantation is decomposed in three services: explantation, transport, and implantation. The identity of the donor (recipient) is often irrelevant for the explantation (implantation) service.
\nhttp://terminology.hl7.org/CodeSystem/v3-ParticipationType
where concept is-a DON