SMART Scheduling Links
1.0.0-ballot - STU 1 Ballot

SMART Scheduling Links, published by HL7 International / Patient Administration. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/smart-scheduling-links/ and changes regularly. See the Directory of published versions

## Resource Profile: Slot - Detailed Descriptions

Page standards status: Trial-use | Maturity Level: 2

Definitions for the smart-scheduling-slot resource profile

- Key Elements Table
- Differential Table
- Snapshot Table

Guidance on how to interpret the contents of this table can be foundhere

0. Slot
Definition | A slot of time on a schedule that may be available for booking appointments.
Short | A slot of time on a schedule that may be available for booking appointments
Control | 0..*
Is Modifier | false
Summary | false
Invariants | dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty()) dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()) dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()) dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty()) dom-6: A resource should have narrative for robust management (text.`div`.exists())
2. Slot.implicitRules
Definition | 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.
Short | A set of rules under which this content was created
Comments | Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
Control | 0..1
Type | uri
Is Modifier | true because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. Slot.extension
Definition | An 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.
Short | ExtensionAdditional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing | This element introduces a set of slices on `Slot.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
6. Slot.extension:bookingDeepLink
Slice Name | bookingDeepLink
Definition | A deep link into the Provider Booking Portal where the user can begin booking this slot.
Short | Booking Deep Link
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Booking Deep Link) (Extension Type: url)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
8. Slot.extension:bookingPhone
Slice Name | bookingPhone
Definition | A phone number the user can call to book this slot.
Short | Booking Phone
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Booking Phone) (Extension Type: string)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
10. Slot.modifierExtension
Definition | 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).
Short | Extensions that cannot be ignored
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
12. Slot.appointmentType
Definition | The style of appointment or patient that may be booked in the slot (not service type).
Short | The style of appointment or patient that may be booked in the slot (not service type)
Control | 0..1
Binding | The codes SHOULD be taken from Appointment Type and Reasons http://terminology.hl7.org/ValueSet/v2-0276 (preferred to `http://hl7.org/fhir/uv/smart-scheduling-links/ValueSet/appointment-type-and-reasons-vs` )
Type | CodeableConcept
Is Modifier | false
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
14. Slot.schedule
Definition | The schedule resource that this slot defines an interval of status information.
Short | The schedule resource that this slot defines an interval of status information
Control | 1..1
Type | Reference(Schedule)
Is Modifier | false
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. Slot.status
Definition | busy | free | busy-unavailable | busy-tentative | entered-in-error.
Short | busy | free | busy-unavailable | busy-tentative | entered-in-error
Control | 1..1
Binding | The codes SHALL be taken from SlotStatus http://hl7.org/fhir/ValueSet/slotstatus|4.0.1 (required to `http://hl7.org/fhir/ValueSet/slotstatus|4.0.1` ) The free/busy status of the slot.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
18. Slot.start
Definition | Date/Time that the slot is to begin.
Short | Date/Time that the slot is to begin
Control | 1..1
Type | instant
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. Slot.end
Definition | Date/Time that the slot is to conclude.
Short | Date/Time that the slot is to conclude
Control | 1..1
Type | instant
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be foundhere

0. Slot
2. Slot.extension
Slicing | This element introduces a set of slices on `Slot.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
4. Slot.extension:bookingDeepLink
Slice Name | bookingDeepLink
Control | 0..1
Type | Extension(Booking Deep Link) (Extension Type: url)
6. Slot.extension:bookingPhone
Slice Name | bookingPhone
Control | 0..1
Type | Extension(Booking Phone) (Extension Type: string)
8. Slot.appointmentType
Binding | The codes SHOULD be taken from Appointment Type and Reasons (preferred to `http://hl7.org/fhir/uv/smart-scheduling-links/ValueSet/appointment-type-and-reasons-vs` )
Must Support | true
10. Slot.schedule
Must Support | true
12. Slot.status
Must Support | true
14. Slot.start
Must Support | true
16. Slot.end
Must Support | true

Guidance on how to interpret the contents of this table can be foundhere

0. Slot
Definition | A slot of time on a schedule that may be available for booking appointments.
Short | A slot of time on a schedule that may be available for booking appointments
Control | 0..*
Is Modifier | false
Summary | false
Invariants | dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (`contained.contained.empty()`) dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (`contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`) dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (`contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`) dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (`contained.meta.security.empty()`) dom-6: A resource should have narrative for robust management (`text.`div`.exists()`)
2. Slot.id
Definition | The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Short | Logical id of this artifact
Comments | The only time that a resource does not have an id is when it is being submitted to the server using a create operation.
Control | 0..1
Type | id
Is Modifier | false
Summary | true
4. Slot.meta
Definition | 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.
Short | Metadata about the resource
Control | 0..1
Type | Meta
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
6. Slot.implicitRules
Definition | 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.
Short | A set of rules under which this content was created
Comments | Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
Control | 0..1
Type | uri
Is Modifier | true because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
8. Slot.language
Definition | The base language in which the resource is written.
Short | Language of the resource content
Comments | Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).
Control | 0..1
Binding | The codes SHOULD be taken from CommonLanguages (preferred to `http://hl7.org/fhir/ValueSet/languages|4.0.1` ) A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
10. Slot.text
Definition | 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.
Short | Text summary of the resource, for human interpretation
Comments | Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
Control | 0..1
Type | Narrative
Is Modifier | false
Summary | false
Alternate Names | narrative, html, xhtml, display
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
12. Slot.contained
Definition | 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.
Short | Contained, inline Resources
Comments | This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.
Control | 0..*
Type | Resource
Is Modifier | false
Summary | false
Alternate Names | inline resources, anonymous resources, contained resources
14. Slot.extension
Definition | An Extension
Short | Extension
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing | This element introduces a set of slices on `Slot.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
16. Slot.extension:bookingDeepLink
Slice Name | bookingDeepLink
Definition | A deep link into the Provider Booking Portal where the user can begin booking this slot.
Short | Booking Deep Link
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Booking Deep Link) (Extension Type: url)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
18. Slot.extension:bookingPhone
Slice Name | bookingPhone
Definition | A phone number the user can call to book this slot.
Short | Booking Phone
Control | 0..1 This element is affected by the following invariants: ele-1
Type | Extension(Booking Phone) (Extension Type: string)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
20. Slot.modifierExtension
Definition | 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).
Short | Extensions that cannot be ignored
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
22. Slot.identifier
Definition | External Ids for this item.
Short | External Ids for this item
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 0..*
Type | Identifier
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
24. Slot.serviceCategory
Definition | A broad categorization of the service that is to be performed during this appointment.
Short | A broad categorization of the service that is to be performed during this appointment
Control | 0..*
Binding | For example codes, see ServiceCategory (example to `http://hl7.org/fhir/ValueSet/service-category|4.0.1` )
Type | CodeableConcept
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
26. 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.
Short | 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
Control | 0..*
Binding | For example codes, see ServiceType (example to `http://hl7.org/fhir/ValueSet/service-type|4.0.1` )
Type | CodeableConcept
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
28. Slot.specialty
Definition | The specialty of a practitioner that would be required to perform the service requested in this appointment.
Short | The specialty of a practitioner that would be required to perform the service requested in this appointment
Control | 0..*
Binding | The codes SHOULD be taken from PracticeSettingCodeValueSet (preferred to `http://hl7.org/fhir/ValueSet/c80-practice-codes|4.0.1` ) Additional details about where the content was created (e.g. clinical specialty).
Type | CodeableConcept
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
30. Slot.appointmentType
Definition | The style of appointment or patient that may be booked in the slot (not service type).
Short | The style of appointment or patient that may be booked in the slot (not service type)
Control | 0..1
Binding | The codes SHOULD be taken from Appointment Type and Reasons (preferred to `http://hl7.org/fhir/uv/smart-scheduling-links/ValueSet/appointment-type-and-reasons-vs` )
Type | CodeableConcept
Is Modifier | false
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
32. Slot.schedule
Definition | The schedule resource that this slot defines an interval of status information.
Short | The schedule resource that this slot defines an interval of status information
Control | 1..1
Type | Reference(Schedule)
Is Modifier | false
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
34. Slot.status
Definition | busy | free | busy-unavailable | busy-tentative | entered-in-error.
Short | busy | free | busy-unavailable | busy-tentative | entered-in-error
Control | 1..1
Binding | The codes SHALL be taken from SlotStatus (required to `http://hl7.org/fhir/ValueSet/slotstatus|4.0.1` ) The free/busy status of the slot.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
36. Slot.start
Definition | Date/Time that the slot is to begin.
Short | Date/Time that the slot is to begin
Control | 1..1
Type | instant
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
38. Slot.end
Definition | Date/Time that the slot is to conclude.
Short | Date/Time that the slot is to conclude
Control | 1..1
Type | instant
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
40. Slot.overbooked
Definition | This slot has already been overbooked, appointments are unlikely to be accepted for this time.
Short | This slot has already been overbooked, appointments are unlikely to be accepted for this time
Control | 0..1
Type | boolean
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Meaning if Missing | If overbooked is missing, systems may assume that there are still appointments available
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
42. Slot.comment
Definition | Comments on the slot to describe any extended information. Such as custom constraints on the slot.
Short | Comments on the slot to describe any extended information. Such as custom constraints on the slot
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)