Include these codes as defined in http://hl7.org/fhir/appointmentstatus Code Display Definition proposed Proposed None of the participant(s) have finalized their acceptance of the appointment request, and the start/end time might not be set yet. pending Pending Some or all of the participant(s) have not finalized their acceptance of the appointment request. booked Booked All participant(s) have been considered and the appointment is confirmed to go ahead at the date/times specified.