This page is part of the FHIR Specification (v4.3.0: R4B -  STU). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions  . Page versions: R5 R4B R4 R3 R2
. Page versions: R5 R4B R4 R3 R2
| Patient Administration  Work Group | Maturity Level: 3 | Trial Use | Security Category: Business | Compartments: Not linked to any defined compartments | 
Detailed Descriptions for the elements in the Slot resource.
| Slot | |
| Element Id | Slot | 
| Definition | A slot of time on a schedule that may be available for booking appointments. | 
| Cardinality | 0..* | 
| Type | DomainResource | 
| Summary | false | 
| Slot.identifier | |
| Element Id | Slot.identifier | 
| Definition | External Ids for this item. | 
| Note | This is a business identifier, not a resource identifier (see discussion) | 
| Cardinality | 0..* | 
| Type | Identifier | 
| Summary | true | 
| Slot.serviceCategory | |
| Element Id | Slot.serviceCategory | 
| Definition | A broad categorization of the service that is to be performed during this appointment. | 
| Cardinality | 0..* | 
| Terminology Binding | ServiceCategory (Example) | 
| Type | CodeableConcept | 
| Summary | true | 
| Slot.serviceType | |
| Element Id | Slot.serviceType | 
| Definition | The type of appointments that can be booked into this slot (ideally this would be an identifiable service - which is at a location, rather than the location itself). If provided then this overrides the value provided on the availability resource. | 
| Cardinality | 0..* | 
| Terminology Binding | ServiceType (Example) | 
| Type | CodeableConcept | 
| Summary | true | 
| Slot.specialty | |
| Element Id | Slot.specialty | 
| Definition | The specialty of a practitioner that would be required to perform the service requested in this appointment. | 
| Cardinality | 0..* | 
| Terminology Binding | Practice Setting Code Value Set (Preferred) | 
| Type | CodeableConcept | 
| Summary | true | 
| Slot.appointmentType | |
| Element Id | Slot.appointmentType | 
| Definition | The style of appointment or patient that may be booked in the slot (not service type). | 
| Cardinality | 0..1 | 
| Terminology Binding | hl7VS-appointmentReasonCodes  (Preferred) | 
| Type | CodeableConcept | 
| Summary | true | 
| Slot.schedule | |
| Element Id | Slot.schedule | 
| Definition | The schedule resource that this slot defines an interval of status information. | 
| Cardinality | 1..1 | 
| Type | Reference(Schedule) | 
| Summary | true | 
| Slot.status | |
| Element Id | Slot.status | 
| Definition | busy | free | busy-unavailable | busy-tentative | entered-in-error. | 
| Cardinality | 1..1 | 
| Terminology Binding | SlotStatus (Required) | 
| Type | code | 
| Summary | true | 
| Slot.start | |
| Element Id | Slot.start | 
| Definition | Date/Time that the slot is to begin. | 
| Cardinality | 1..1 | 
| Type | instant | 
| Summary | true | 
| Slot.end | |
| Element Id | Slot.end | 
| Definition | Date/Time that the slot is to conclude. | 
| Cardinality | 1..1 | 
| Type | instant | 
| Summary | true | 
| Slot.overbooked | |
| Element Id | Slot.overbooked | 
| Definition | This slot has already been overbooked, appointments are unlikely to be accepted for this time. | 
| Cardinality | 0..1 | 
| Type | boolean | 
| Meaning if Missing | If overbooked is missing, systems may assume that there are still appointments available | 
| Summary | false | 
| Slot.comment | |
| Element Id | Slot.comment | 
| Definition | Comments on the slot to describe any extended information. Such as custom constraints on the slot. | 
| Cardinality | 0..1 | 
| Type | string | 
| Summary | false |