L: Performer HCP cancels appointment

The following sequence diagram shows the messaging flow when the Performer HCP cancels an appointment.

See Participants for more information.

Element and Value

Refer to Primary Flow for DocumentReference, HealthcareService, Location, Patient, Practitioner, and PractitionerRole elements.

Step 1: Performer HCP notifies CAT of appointment cancellation

See Step 15 in Primary Flow message flow with changes as below:

Element	Value
MessageHeader.eventCoding	"notify-update-process-request"
MessageHeader.reason	"appointment-status-updated"
Appointment.status	"cancelled"
Appointment.cancellationReason	as appropriate

Step 3: CAT notifies Requester HCP of appointment cancellation

See Step 17 in Primary Flow message flow with changes as below:

Element	Value
MessageHeader.reason	"appointment-status-updated"
Appointment.status	"cancelled"
Appointment.cancellationReason	as appropriate

Step 4: CAT notifies Requester HCP of update to referral record (appointment cancelled)

See Step 18 of Primary Flow message flow with changes as below:

Element	Value
Appointment.status	"cancelled"
Appointment.cancellationReason	as appropriate
ServiceRequest.extension.referralTimestamp.extension.timestampType	timestamp "appointment-booked" will or will not be included depending on the reason for cancellation