A booking of a healthcare event among patient(s), practitioner(s), related person(s) and/or device(s) for a specific date/time. This may result in one or more Encounter(s).

This records identifiers associated with this appointment concern that are defined by business processes and/or used to refer to it when a direct URL reference to the resource itself is not appropriate (e.g. in CDA documents, or in written / printed documentation).

The overall status of the Appointment. Each of the participants has their own participation status which indicates their involvement in the process, however this status indicates the shared status.

If the Appointment's status is "cancelled" then all participants are expected to have their calendars released for the appointment period, and as such any Slots that were marked as BUSY can be re-set to FREE.

The type of appointment that is being booked (This may also be associated with participants for location, and/or a HealthcareService).

The reason that this appointment is being scheduled. This is more clinical than administrative.

The priority of the appointment. Can be used to make informed decisions if needing to re-prioritize appointments. (The iCal Standard specifies 0 as undefined, 1 as highest, 9 as lowest priority).

Seeking implementer feedback on this property and how interoperable it is.

Using an extension to record a codeableconcept for named values may be tested at a future connectathon.

The brief description of the appointment as would be shown on a subject line in a meeting request, or appointment list. Detailed or expanded information should be put in the comment field.

Date/Time that the appointment is to take place.

Date/Time that the appointment is to conclude.

Number of minutes that the appointment is to take. This can be less than the duration between the start and end times (where actual time of appointment is only an estimate or is a planned appointment request).

The slot that this appointment is filling. If provided then the schedule will not be provided as slots are not recursive, and the start/end values MUST be the same as from the slot.

Additional comments about the appointment.

Additional text to aid in facilitating the appointment. For instance, a comment might be, "patient should proceed immediately to infusion room upon arrival"

Where this is a planned appointment and the start/end dates are not set then this field can be used to provide additional guidance on the details of the appointment request, including any restrictions on when to book it.

List of participants involved in the appointment.

Role of participant in the appointment.

The role of the participant can be used to declare what the actor will be doing in the scope of this appointment.

If the actor is not specified, then it is expected that the actor will be filled in at a later stage of planning.

This value MUST be the same when creating an AppointmentResponse so that they can be matched, and subsequently update the Appointment.

A Person, Location/HealthcareService or Device that is participating in the appointment.

Is this participant required to be present at the meeting. This covers a use-case where 2 doctors need to meet to discuss the results for a specific patient, and the patient is not required to be present.

Participation status of the Patient.