| Slot | 0..* | Slot | A slot of time on a schedule that may be available for booking appointments. |
| Slot.id | 0..1 | http://hl7.org/fhirpath/System.String | The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes. |
| Slot.meta | 0..1 | Meta | The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource. |
| Slot.implicitRules | 0..1 | uri | A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc. |
| Slot.language | 0..1 | code | The base language in which the resource is written. |
| Slot.text | 0..1 | Narrative | A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety. |
| Slot.contained | 0..* | Resource | These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope. |
| Slot.extension | 0..* | Extension | May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. |
| Slot.modifierExtension | 0..* | Extension | May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself). |
| Slot.identifier | 0..* | Identifier | External Ids for this item. |
| Slot.serviceCategory | 0..* | CodeableConcept | A broad categorization of the service that is to be performed during this appointment. |
| Slot.serviceType | 0..* | CodeableConcept | 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. |
| Slot.specialty | 0..* | CodeableConcept | The specialty of a practitioner that would be required to perform the service requested in this appointment. |
| Slot.appointmentType | 0..1 | CodeableConcept | The style of appointment or patient that may be booked in the slot (not service type). |
| Slot.schedule | 1..1 | Reference | The schedule resource that this slot defines an interval of status information. |
| Slot.status | 1..1 | code | busy / free / busy-unavailable / busy-tentative / entered-in-error. |
| Slot.start | 1..1 | instant | Date/Time that the slot is to begin. |
| Slot.end | 1..1 | instant | Date/Time that the slot is to conclude. |
| Slot.overbooked | 0..1 | boolean | This slot has already been overbooked, appointments are unlikely to be accepted for this time. |
| Slot.comment | 0..1 | string | Comments on the slot to describe any extended information. Such as custom constraints on the slot. |