• Include these codes as defined in http://terminology.hl7.org/CodeSystem/v3-ParticipationType version 2018-08-12

  Code	Display	Definition
  PART	Participation	Indicates that the target of the participation is involved in some manner in the act, but does not qualify how.
  CON	consultant	An advisor participating in the service by performing evaluations and making recommendations.
  INF	informant	A source of reported information (e.g., a next of kin who answers questions about the patient's history). For history questions, the patient is logically an informant, yet the informant of history questions is implicitly the subject.
  WIT	witness	Only with service events. A person witnessing the action happening without doing anything. A witness is not necessarily aware, much less approves of anything stated in the service event. Example for a witness is students watching an operation or an advanced directive witness.
  SPRF	secondary performer	A person assisting in an act through his substantial presence and involvement This includes: assistants, technicians, associates, or whatever the job titles may be.
  VRF	verifier	A person who verifies the correctness and appropriateness of the service (plan, order, event, etc.) and hence takes on accountability.
  LA	legal authenticator	A verifier who legally authenticates the accuracy of an act. An example would be a staff physician who sees a patient and dictates a note, then later signs it. Their signature constitutes a legal authentication.

This value set expansion contains 7 concepts.