0.2.0 - Informative

TCFHIRAGSchedulingR5, published by HL7® Austria, TC FHIR®. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7Austria/TC-FHIR-AG-Scheduling-R5/ and changes regularly. See the Directory of published versions

Resource Profile: HL7ATSchedulingAppointment - Detailed Descriptions

Draft as of 2026-01-12

Definitions for the at-scheduling-appointment resource profile.

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

0. Appointment
Definition

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).

ShortA 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)
Control0..*
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantsapp-2: Either start and end are specified, or neither (start.exists() = end.exists())
app-3: Only proposed or cancelled appointments can be missing start/end dates ((start.exists() and end.exists()) or (status in ('proposed' | 'cancelled' | 'waitlist')))
app-4: Cancellation reason is only used for appointments that have been cancelled, or noshow (cancellationReason.exists() implies (status='noshow' or status='cancelled'))
app-5: The start must be less than or equal to the end (start.exists() implies start <= end)
app-6: An appointment may have an originatingAppointment or recurrenceTemplate, but not both (originatingAppointment.exists().not() or recurrenceTemplate.exists().not())
app-7: Cancellation date is only used for appointments that have been cancelled, or noshow (cancellationDate.exists() implies (status='noshow' or status='cancelled'))
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().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(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. Appointment.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.

ShortA 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 its narrative along with other profiles, value sets, etc.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. Appointment.contained
Definition

These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning.

ShortContained, 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.

Control0..*
This element is affected by the following invariants: dom-2, dom-4, dom-3, dom-5
TypeResource
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesinline resources, anonymous resources, contained resources
6. Appointment.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 managable, 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.

ShortExtensionAdditional 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.

Control0..*
TypeExtension
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
SlicingThis element introduces a set of slices on Appointment.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 8. Appointment.extension:postponementReason
    Slice NamepostponementReason
    Definition

    The reason why an appointment was postoponed. This is often used in reporting/billing/further processing to determine if further actions are required, or specific fees apply.

    ShortAppointment Postponement Reason
    Control0..1
    TypeExtension(Appointment Postponement Reason) (Extension Type: CodeableConcept)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    10. Appointment.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 managable, 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).

    ShortExtensions 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.

    Control0..*
    TypeExtension
    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
    Must Supportfalse
    Summarytrue
    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 Namesextensions, user content
    Invariantsele-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. Appointment.status
    Definition

    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.

    Shortproposed | pending | booked | arrived | fulfilled | cancelled | noshow | entered-in-error | checked-in | waitlist
    Comments

    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.

    This element is labeled as a modifier because the status contains the code entered-in-error that mark the Appointment as not currently valid.

    Control1..1
    This element is affected by the following invariants: app-4, app-3, app-7
    BindingThe codes SHALL be taken from AppointmentStatushttp://hl7.org/fhir/ValueSet/appointmentstatus|5.0.0
    (required to http://hl7.org/fhir/ValueSet/appointmentstatus|5.0.0)

    The free/busy status of an appointment.

    Typecode
    Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supportfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    14. Appointment.serviceType
    Definition

    The specific service that is to be performed during this appointment.

    ShortThe specific service that is to be performed during this appointment
    Comments

    For a provider to provider appointment the code "FOLLOWUP" may be appropriate, as this is expected to be discussing some patient that was seen in the past.

    Control0..*
    BindingUnless not suitable, these codes SHALL be taken from For example codes, see AT Scheduling Service Typehttp://hl7.org/fhir/ValueSet/service-type|5.0.0
    (extensible to http://hl7.at/fhir/TC-FHIR-AG-Scheduling-R5/R5/ValueSet/AtSchedulingServiceType)
    TypeCodeableReference(HL7® AT Scheduling HealthcareService Profile, HealthcareService)
    Is Modifierfalse
    Must Supportfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    16. Appointment.specialty
    Definition

    The specialty of a practitioner that would be required to perform the service requested in this appointment.

    ShortThe specialty of a practitioner that would be required to perform the service requested in this appointment
    Comments

    ToDo

    Control0..*
    BindingThe codes SHOULD be taken from PracticeSettingCodeValueSethttp://hl7.org/fhir/ValueSet/c80-practice-codes|5.0.0
    (preferred to http://hl7.org/fhir/ValueSet/c80-practice-codes|5.0.0)
    TypeCodeableConcept
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    18. Appointment.replaces
    Definition

    Appointment replaced by this Appointment in cases where there is a cancellation, the details of the cancellation can be found in the cancellationReason property (on the referenced resource).

    ShortAppointment replaced by this Appointment
    Control0..*
    TypeReference(HL7® AT Scheduling Appointment Profile, Appointment)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    20. Appointment.previousAppointment
    Definition

    The previous appointment in a series of related appointments.

    ShortThe previous appointment in a series
    Comments

    This property is intended for use when representing a series of related appointments. For example, in a nuclear medicine procedure, where there is an appointment for the injection of the isotopes, and then a subsequent appointment for the scan, the scan appointment would refer to the injection appointment via Appointment.previousAppointment. For representing recurring appointments, see the guidance on recurring vs. series appointments.

    Control0..1
    TypeReference(HL7® AT Scheduling Appointment Profile, Appointment)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    22. Appointment.originatingAppointment
    Definition

    The originating appointment in a recurring set of related appointments.

    ShortThe originating appointment in a recurring set of appointments
    Comments

    This property is intended for use when representing a recurring set of related appointments.

    For example, a patient undergoing physical therapy may have a recurring appointment every Tuesday and Thursday. Each occurrence of the set will refer to the originating appointment, which contains the recurring template information. For representing appointment series, see the guidance on recurring vs. series appointments.

    Control0..1
    This element is affected by the following invariants: app-6
    TypeReference(HL7® AT Scheduling Appointment Profile, Appointment)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    24. Appointment.start
    Definition

    Date/Time that the appointment is to take place.

    ShortWhen appointment is to take place
    Comments

    If actual start/end times are not known then the requested period start/end can be used.

    Control0..1
    This element is affected by the following invariants: app-5, app-3, app-2
    Typeinstant
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supportfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    26. Appointment.end
    Definition

    Date/Time that the appointment is to conclude.

    ShortWhen appointment is to conclude
    Comments

    If actual start/end times are not known then the requested period start/end can be used.

    Control0..1
    This element is affected by the following invariants: app-5, app-3, app-2
    Typeinstant
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supportfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    28. Appointment.slot
    Definition

    The slots from the participants' schedules that will be filled by the appointment.

    ShortThe slots that this appointment is filling
    Control0..*
    TypeReference(HL7® AT Scheduling Slot Profile, Slot)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    30. Appointment.subject
    Definition

    The patient or group associated with the appointment, if they are to be present (usually) then they should also be included in the participant backbone element.

    ShortThe patient or group associated with the appointment
    Control0..1
    TypeReference(HL7® AT Core Patient Profile, Group, Patient, Group)
    Is Modifierfalse
    Must Supportfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    32. Appointment.participant
    Definition

    List of participants involved in the appointment.

    ShortParticipants involved in appointment
    Comments

    ToDo

    Control1..*
    TypeBackboneElement
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    SlicingThis element introduces a set of slices on Appointment.participant. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • type @ actor.resolve()
    • 34. Appointment.participant.extension
      Definition

      An Extension


      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

      ShortExtensionAdditional 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.

      Control0..*
      TypeExtension
      Is Modifierfalse
      Summaryfalse
      Alternate Namesextensions, user content
      Invariantsele-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())
      SlicingThis element introduces a set of slices on Appointment.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 36. Appointment.participant.extension:virtualService
        Slice NamevirtualService
        Definition

        Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

        ShortVirtualServiceDetail
        Control0..1
        TypeExtension(VirtualServiceDetail) (Complex Extension)
        Is Modifierfalse
        Invariantsele-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())
        38. Appointment.participant.modifierExtension
        Definition

        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

        ShortExtensions that cannot be ignored even if unrecognized
        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.

        Control0..*
        TypeExtension
        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
        Summarytrue
        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 Namesextensions, user content, modifiers
        Invariantsele-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())
        40. Appointment.participant.actor
        Definition

        The individual, device, location, or service participating in the appointment.

        ShortThe individual, device, location, or service participating in the appointment
        Comments

        Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

        Control10..1
        This element is affected by the following invariants: app-1
        TypeReference(Patient, Group, Practitioner, PractitionerRole, CareTeam, RelatedPerson, Device, HealthcareService, Location)
        Is Modifierfalse
        Must Supporttrue
        Must Support TypesNo must-support rules about the choice of types/profiles
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        42. Appointment.participant.actor.reference
        Definition

        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

        ShortLiteral reference, Relative, internal or absolute URL
        Comments

        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

        Control0..1
        This element is affected by the following invariants: ref-2, ref-1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        44. Appointment.participant.actor.display
        Definition

        Plain text narrative that identifies the resource in addition to the resource reference.

        ShortText alternative for the resource
        Comments

        ToDo


        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

        Control0..1
        This element is affected by the following invariants: ref-2
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        46. Appointment.participant.status
        Definition

        Participation status of the actor.

        Shortaccepted | declined | tentative | needs-action
        Control1..1
        BindingThe codes SHALL be taken from ParticipationStatushttp://hl7.org/fhir/ValueSet/participationstatus|5.0.0
        (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

        The Participation status of an appointment.

        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        48. Appointment.participant:HL7ATCorePatient
        Slice NameHL7ATCorePatient
        Definition

        List of participants involved in the appointment.

        ShortParticipants involved in appointment
        Control1..*
        TypeBackboneElement
        Is Modifierfalse
        Must Supporttrue
        Summaryfalse
        Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
        ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        50. Appointment.participant:HL7ATCorePatient.extension:virtualService
        Slice NamevirtualService
        Definition

        Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

        ShortVirtualServiceDetail
        Control0..1
        TypeExtension(VirtualServiceDetail) (Complex Extension)
        Is Modifierfalse
        Invariantsele-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())
        52. Appointment.participant:HL7ATCorePatient.modifierExtension
        Definition

        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

        ShortExtensions that cannot be ignored even if unrecognized
        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.

        Control0..*
        TypeExtension
        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
        Summarytrue
        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 Namesextensions, user content, modifiers
        Invariantsele-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())
        54. Appointment.participant:HL7ATCorePatient.actor
        Definition

        The individual, device, location, or service participating in the appointment.

        ShortThe individual, device, location, or service participating in the appointment
        Comments

        Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

        Control10..1
        This element is affected by the following invariants: app-1
        TypeReference(Patient, Patient, Group, Practitioner, PractitionerRole, CareTeam, RelatedPerson, Device, HealthcareService, Location)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        56. Appointment.participant:HL7ATCorePatient.actor.reference
        Definition

        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

        ShortLiteral reference, Relative, internal or absolute URL
        Comments

        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

        Control10..1
        This element is affected by the following invariants: ref-2, ref-1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        58. Appointment.participant:HL7ATCorePatient.actor.display
        Definition

        Plain text narrative that identifies the resource in addition to the resource reference.

        ShortText alternative for the resource
        Comments

        ToDo


        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

        Control0..1
        This element is affected by the following invariants: ref-2
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        60. Appointment.participant:HL7ATCorePatient.status
        Definition

        Participation status of the actor.

        Shortaccepted | declined | tentative | needs-action
        Control1..1
        BindingThe codes SHALL be taken from ParticipationStatushttp://hl7.org/fhir/ValueSet/participationstatus|5.0.0
        (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

        The Participation status of an appointment.

        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        62. Appointment.participant:HL7ATCorePractitioner
        Slice NameHL7ATCorePractitioner
        Definition

        List of participants involved in the appointment.

        ShortParticipants involved in appointment
        Control01..*
        TypeBackboneElement
        Is Modifierfalse
        Must Supporttrue
        Summaryfalse
        Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
        ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        64. Appointment.participant:HL7ATCorePractitioner.extension:virtualService
        Slice NamevirtualService
        Definition

        Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

        ShortVirtualServiceDetail
        Control0..1
        TypeExtension(VirtualServiceDetail) (Complex Extension)
        Is Modifierfalse
        Invariantsele-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())
        66. Appointment.participant:HL7ATCorePractitioner.modifierExtension
        Definition

        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

        ShortExtensions that cannot be ignored even if unrecognized
        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.

        Control0..*
        TypeExtension
        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
        Summarytrue
        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 Namesextensions, user content, modifiers
        Invariantsele-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())
        68. Appointment.participant:HL7ATCorePractitioner.actor
        Definition

        The individual, device, location, or service participating in the appointment.

        ShortThe individual, device, location, or service participating in the appointment
        Comments

        Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

        Control10..1
        This element is affected by the following invariants: app-1
        TypeReference(Practitioner, Patient, Group, Practitioner, PractitionerRole, CareTeam, RelatedPerson, Device, HealthcareService, Location)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        70. Appointment.participant:HL7ATCorePractitioner.actor.reference
        Definition

        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

        ShortLiteral reference, Relative, internal or absolute URL
        Comments

        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

        Control10..1
        This element is affected by the following invariants: ref-2, ref-1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        72. Appointment.participant:HL7ATCorePractitioner.actor.display
        Definition

        Plain text narrative that identifies the resource in addition to the resource reference.

        ShortText alternative for the resource
        Comments

        ToDo


        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

        Control0..1
        This element is affected by the following invariants: ref-2
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        74. Appointment.participant:HL7ATCorePractitioner.status
        Definition

        Participation status of the actor.

        Shortaccepted | declined | tentative | needs-action
        Control1..1
        BindingThe codes SHALL be taken from ParticipationStatushttp://hl7.org/fhir/ValueSet/participationstatus|5.0.0
        (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

        The Participation status of an appointment.

        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        76. Appointment.participant:HL7ATCorePractitionerRole
        Slice NameHL7ATCorePractitionerRole
        Definition

        List of participants involved in the appointment.

        ShortParticipants involved in appointment
        Control01..*
        TypeBackboneElement
        Is Modifierfalse
        Must Supporttrue
        Summaryfalse
        Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
        ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        78. Appointment.participant:HL7ATCorePractitionerRole.extension:virtualService
        Slice NamevirtualService
        Definition

        Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

        ShortVirtualServiceDetail
        Control0..1
        TypeExtension(VirtualServiceDetail) (Complex Extension)
        Is Modifierfalse
        Invariantsele-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())
        80. Appointment.participant:HL7ATCorePractitionerRole.modifierExtension
        Definition

        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

        ShortExtensions that cannot be ignored even if unrecognized
        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.

        Control0..*
        TypeExtension
        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
        Summarytrue
        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 Namesextensions, user content, modifiers
        Invariantsele-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())
        82. Appointment.participant:HL7ATCorePractitionerRole.actor
        Definition

        The individual, device, location, or service participating in the appointment.

        ShortThe individual, device, location, or service participating in the appointment
        Comments

        Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

        Control10..1
        This element is affected by the following invariants: app-1
        TypeReference(PractitionerRole, Patient, Group, Practitioner, PractitionerRole, CareTeam, RelatedPerson, Device, HealthcareService, Location)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        84. Appointment.participant:HL7ATCorePractitionerRole.actor.reference
        Definition

        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

        ShortLiteral reference, Relative, internal or absolute URL
        Comments

        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

        Control10..1
        This element is affected by the following invariants: ref-2, ref-1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        86. Appointment.participant:HL7ATCorePractitionerRole.actor.display
        Definition

        Plain text narrative that identifies the resource in addition to the resource reference.

        ShortText alternative for the resource
        Comments

        ToDo


        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

        Control0..1
        This element is affected by the following invariants: ref-2
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        88. Appointment.participant:HL7ATCorePractitionerRole.status
        Definition

        Participation status of the actor.

        Shortaccepted | declined | tentative | needs-action
        Control1..1
        BindingThe codes SHALL be taken from ParticipationStatushttp://hl7.org/fhir/ValueSet/participationstatus|5.0.0
        (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

        The Participation status of an appointment.

        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        90. Appointment.participant:HL7ATSchedulingHealthcareService
        Slice NameHL7ATSchedulingHealthcareService
        Definition

        List of participants involved in the appointment.

        ShortParticipants involved in appointment
        Control01..*
        TypeBackboneElement
        Is Modifierfalse
        Must Supporttrue
        Summaryfalse
        Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
        ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        92. Appointment.participant:HL7ATSchedulingHealthcareService.extension:virtualService
        Slice NamevirtualService
        Definition

        Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

        ShortVirtualServiceDetail
        Control0..1
        TypeExtension(VirtualServiceDetail) (Complex Extension)
        Is Modifierfalse
        Invariantsele-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())
        94. Appointment.participant:HL7ATSchedulingHealthcareService.modifierExtension
        Definition

        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

        ShortExtensions that cannot be ignored even if unrecognized
        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.

        Control0..*
        TypeExtension
        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
        Summarytrue
        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 Namesextensions, user content, modifiers
        Invariantsele-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())
        96. Appointment.participant:HL7ATSchedulingHealthcareService.actor
        Definition

        The individual, device, location, or service participating in the appointment.

        ShortThe individual, device, location, or service participating in the appointment
        Comments

        Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

        Control10..1
        This element is affected by the following invariants: app-1
        TypeReference(HealthcareService, Patient, Group, Practitioner, PractitionerRole, CareTeam, RelatedPerson, Device, HealthcareService, Location)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        98. Appointment.participant:HL7ATSchedulingHealthcareService.actor.reference
        Definition

        A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

        ShortLiteral reference, Relative, internal or absolute URL
        Comments

        Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

        Control10..1
        This element is affected by the following invariants: ref-2, ref-1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        100. Appointment.participant:HL7ATSchedulingHealthcareService.actor.display
        Definition

        Plain text narrative that identifies the resource in addition to the resource reference.

        ShortText alternative for the resource
        Comments

        ToDo


        This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it.

        Control0..1
        This element is affected by the following invariants: ref-2
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        102. Appointment.participant:HL7ATSchedulingHealthcareService.status
        Definition

        Participation status of the actor.

        Shortaccepted | declined | tentative | needs-action
        Control1..1
        BindingThe codes SHALL be taken from ParticipationStatushttp://hl7.org/fhir/ValueSet/participationstatus|5.0.0
        (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

        The Participation status of an appointment.

        Typecode
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-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. Appointment
        2. Appointment.extension
        SlicingThis element introduces a set of slices on Appointment.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ url
        • 4. Appointment.extension:postponementReason
          Slice NamepostponementReason
          Control0..1
          TypeExtension(Appointment Postponement Reason) (Extension Type: CodeableConcept)
          6. Appointment.serviceType
          BindingUnless not suitable, these codes SHALL be taken from AT Scheduling Service Type
          (extensible to http://hl7.at/fhir/TC-FHIR-AG-Scheduling-R5/R5/ValueSet/AtSchedulingServiceType)
          TypeCodeableReference(HL7® AT Scheduling HealthcareService Profile)
          8. Appointment.specialty
          Comments

          ToDo

          Must Supporttrue
          10. Appointment.replaces
          TypeReference(HL7® AT Scheduling Appointment Profile)
          12. Appointment.previousAppointment
          TypeReference(HL7® AT Scheduling Appointment Profile)
          14. Appointment.originatingAppointment
          TypeReference(HL7® AT Scheduling Appointment Profile)
          16. Appointment.slot
          TypeReference(HL7® AT Scheduling Slot Profile)
          18. Appointment.subject
          TypeReference(HL7® AT Core Patient Profile, Group)
          20. Appointment.participant
          Comments

          ToDo

          Must Supporttrue
          SlicingThis element introduces a set of slices on Appointment.participant. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • type @ actor.resolve()
          • 22. Appointment.participant.extension
            SlicingThis element introduces a set of slices on Appointment.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 24. Appointment.participant.extension:virtualService
              Slice NamevirtualService
              Control0..1
              TypeExtension(VirtualServiceDetail) (Complex Extension)
              26. Appointment.participant.actor
              Control1..?
              Must Supporttrue
              28. Appointment.participant.actor.display
              Comments

              ToDo

              Must Supporttrue
              30. Appointment.participant.status
              Must Supporttrue
              32. Appointment.participant:HL7ATCorePatient
              Slice NameHL7ATCorePatient
              Control1..*
              Must Supporttrue
              34. Appointment.participant:HL7ATCorePatient.actor
              TypeReference(Patient)
              36. Appointment.participant:HL7ATCorePatient.actor.reference
              Control1..?
              Must Supporttrue
              38. Appointment.participant:HL7ATCorePractitioner
              Slice NameHL7ATCorePractitioner
              Control0..*
              Must Supporttrue
              40. Appointment.participant:HL7ATCorePractitioner.actor
              TypeReference(Practitioner)
              42. Appointment.participant:HL7ATCorePractitioner.actor.reference
              Control1..?
              Must Supporttrue
              44. Appointment.participant:HL7ATCorePractitionerRole
              Slice NameHL7ATCorePractitionerRole
              Control0..*
              Must Supporttrue
              46. Appointment.participant:HL7ATCorePractitionerRole.actor
              TypeReference(PractitionerRole)
              48. Appointment.participant:HL7ATCorePractitionerRole.actor.reference
              Control1..?
              Must Supporttrue
              50. Appointment.participant:HL7ATSchedulingHealthcareService
              Slice NameHL7ATSchedulingHealthcareService
              Control0..*
              Must Supporttrue
              52. Appointment.participant:HL7ATSchedulingHealthcareService.actor
              TypeReference(HealthcareService)
              54. Appointment.participant:HL7ATSchedulingHealthcareService.actor.reference
              Control1..?
              Must Supporttrue

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

              0. Appointment
              Definition

              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).

              ShortA 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)
              Control0..*
              Is Modifierfalse
              Must Supportfalse
              Summaryfalse
              Invariantsapp-2: Either start and end are specified, or neither (start.exists() = end.exists())
              app-3: Only proposed or cancelled appointments can be missing start/end dates ((start.exists() and end.exists()) or (status in ('proposed' | 'cancelled' | 'waitlist')))
              app-4: Cancellation reason is only used for appointments that have been cancelled, or noshow (cancellationReason.exists() implies (status='noshow' or status='cancelled'))
              app-5: The start must be less than or equal to the end (start.exists() implies start <= end)
              app-6: An appointment may have an originatingAppointment or recurrenceTemplate, but not both (originatingAppointment.exists().not() or recurrenceTemplate.exists().not())
              app-7: Cancellation date is only used for appointments that have been cancelled, or noshow (cancellationDate.exists() implies (status='noshow' or status='cancelled'))
              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().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(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. Appointment.id
              Definition

              The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

              ShortLogical id of this artifact
              Comments

              Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case.

              Control0..1
              Typeid
              Is Modifierfalse
              Must Supportfalse
              Summarytrue
              4. Appointment.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.

              ShortMetadata about the resource
              Control0..1
              TypeMeta
              Is Modifierfalse
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              6. Appointment.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.

              ShortA 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 its narrative along with other profiles, value sets, etc.

              Control0..1
              Typeuri
              Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              8. Appointment.language
              Definition

              The base language in which the resource is written.

              ShortLanguage 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).

              Control0..1
              BindingThe codes SHALL be taken from AllLanguages
              (required to http://hl7.org/fhir/ValueSet/all-languages|5.0.0)

              IETF language tag for a human language

              Typecode
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              10. Appointment.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.

              ShortText summary of the resource, for human interpretation
              Comments

              Contained resources do not have a 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.

              Control0..1
              This element is affected by the following invariants: dom-6
              TypeNarrative
              Is Modifierfalse
              Must Supportfalse
              Summaryfalse
              Alternate Namesnarrative, html, xhtml, display
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              12. Appointment.contained
              Definition

              These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning.

              ShortContained, 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.

              Control0..*
              This element is affected by the following invariants: dom-2, dom-4, dom-3, dom-5
              TypeResource
              Is Modifierfalse
              Must Supportfalse
              Summaryfalse
              Alternate Namesinline resources, anonymous resources, contained resources
              14. Appointment.extension
              Definition

              An Extension

              ShortExtension
              Control0..*
              TypeExtension
              Is Modifierfalse
              Must Supportfalse
              Summaryfalse
              Invariantsele-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())
              SlicingThis element introduces a set of slices on Appointment.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ url
              • 16. Appointment.extension:postponementReason
                Slice NamepostponementReason
                Definition

                The reason why an appointment was postoponed. This is often used in reporting/billing/further processing to determine if further actions are required, or specific fees apply.

                ShortAppointment Postponement Reason
                Control0..1
                TypeExtension(Appointment Postponement Reason) (Extension Type: CodeableConcept)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-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. Appointment.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 managable, 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).

                ShortExtensions 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.

                Control0..*
                TypeExtension
                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
                Must Supportfalse
                Summarytrue
                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 Namesextensions, user content
                Invariantsele-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. Appointment.identifier
                Definition

                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).

                ShortExternal Ids for this item
                NoteThis is a business identifier, not a resource identifier (see discussion)
                Control0..*
                TypeIdentifier
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                22. Appointment.status
                Definition

                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.

                Shortproposed | pending | booked | arrived | fulfilled | cancelled | noshow | entered-in-error | checked-in | waitlist
                Comments

                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.

                This element is labeled as a modifier because the status contains the code entered-in-error that mark the Appointment as not currently valid.

                Control1..1
                This element is affected by the following invariants: app-4, app-3, app-7
                BindingThe codes SHALL be taken from AppointmentStatus
                (required to http://hl7.org/fhir/ValueSet/appointmentstatus|5.0.0)

                The free/busy status of an appointment.

                Typecode
                Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                24. Appointment.cancellationReason
                Definition

                The coded reason for the appointment being cancelled. This is often used in reporting/billing/futher processing to determine if further actions are required, or specific fees apply.

                ShortThe coded reason for the appointment being cancelled
                Control0..1
                This element is affected by the following invariants: app-4
                BindingFor example codes, see AppointmentCancellationReason
                (example to http://hl7.org/fhir/ValueSet/appointment-cancellation-reason|5.0.0)
                TypeCodeableConcept
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                26. Appointment.class
                Definition

                Concepts representing classification of patient encounter such as ambulatory (outpatient), inpatient, emergency, home health or others due to local variations.

                ShortClassification when becoming an encounter
                Control0..*
                BindingThe codes SHOULD be taken from http://terminology.hl7.org/ValueSet/EncounterClass
                (preferred to http://terminology.hl7.org/ValueSet/EncounterClass)

                Classification of the encounter.

                TypeCodeableConcept
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                28. Appointment.serviceCategory
                Definition

                A broad categorization of the service that is to be performed during this appointment.

                ShortA broad categorization of the service that is to be performed during this appointment
                Control0..*
                BindingFor example codes, see ServiceCategory
                (example to http://hl7.org/fhir/ValueSet/service-category|5.0.0)
                TypeCodeableConcept
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                30. Appointment.serviceType
                Definition

                The specific service that is to be performed during this appointment.

                ShortThe specific service that is to be performed during this appointment
                Comments

                For a provider to provider appointment the code "FOLLOWUP" may be appropriate, as this is expected to be discussing some patient that was seen in the past.

                Control0..*
                BindingUnless not suitable, these codes SHALL be taken from AT Scheduling Service Type
                (extensible to http://hl7.at/fhir/TC-FHIR-AG-Scheduling-R5/R5/ValueSet/AtSchedulingServiceType)
                TypeCodeableReference(HL7® AT Scheduling HealthcareService Profile)
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                32. Appointment.specialty
                Definition

                The specialty of a practitioner that would be required to perform the service requested in this appointment.

                ShortThe specialty of a practitioner that would be required to perform the service requested in this appointment
                Comments

                ToDo

                Control0..*
                BindingThe codes SHOULD be taken from PracticeSettingCodeValueSet
                (preferred to http://hl7.org/fhir/ValueSet/c80-practice-codes|5.0.0)
                TypeCodeableConcept
                Is Modifierfalse
                Must Supporttrue
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                34. Appointment.appointmentType
                Definition

                The style of appointment or patient that has been booked in the slot (not service type).

                ShortThe style of appointment or patient that has been booked in the slot (not service type)
                Control0..1
                BindingThe codes SHOULD be taken from hl7VS-appointmentReasonCodes
                (preferred to http://terminology.hl7.org/ValueSet/v2-0276)
                TypeCodeableConcept
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                36. Appointment.reason
                Definition

                The reason that this appointment is being scheduled. This is more clinical than administrative. This can be coded, or as specified using information from another resource. When the patient arrives and the encounter begins it may be used as the admission diagnosis. The indication will typically be a Condition (with other resources referenced in the evidence.detail), or a Procedure.

                ShortReason this appointment is scheduled
                Control0..*
                BindingThe codes SHOULD be taken from EncounterReasonCodes
                (preferred to http://hl7.org/fhir/ValueSet/encounter-reason|5.0.0)

                The Reason for the appointment to take place.

                TypeCodeableReference(Condition, Procedure, Observation, ImmunizationRecommendation)
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                38. Appointment.priority
                Definition

                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).

                ShortUsed to make informed decisions if needing to re-prioritize
                Comments

                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.

                Control0..1
                BindingFor example codes, see ActPriority
                (example to http://terminology.hl7.org/ValueSet/v3-ActPriority)

                Indicates the urgency of the appointment.

                TypeCodeableConcept
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                40. Appointment.description
                Definition

                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 note field.

                ShortShown on a subject line in a meeting request, or appointment list
                Control0..1
                Typestring
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                42. Appointment.replaces
                Definition

                Appointment replaced by this Appointment in cases where there is a cancellation, the details of the cancellation can be found in the cancellationReason property (on the referenced resource).

                ShortAppointment replaced by this Appointment
                Control0..*
                TypeReference(HL7® AT Scheduling Appointment Profile)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                44. Appointment.virtualService
                Definition

                Connection details of a virtual service (e.g. conference call).

                ShortConnection details of a virtual service (e.g. conference call)
                Comments

                There are two types of virtual meetings that often exist:

                • a persistent, virtual meeting room that can only be used for a single purpose at a time,
                • and a dynamic virtual meeting room that is generated on demand for a specific purpose.

                Implementers may consider using Location.virtualService for persistent meeting rooms.

                If each participant would have a different meeting link, an extension using the VirtualServiceContactDetail can be applied to the Appointment.participant BackboneElement.

                Control0..*
                TypeVirtualServiceDetail
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                46. Appointment.supportingInformation
                Definition

                Additional information to support the appointment provided when making the appointment.

                ShortAdditional information to support the appointment
                Control0..*
                TypeReference(Resource)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                48. Appointment.previousAppointment
                Definition

                The previous appointment in a series of related appointments.

                ShortThe previous appointment in a series
                Comments

                This property is intended for use when representing a series of related appointments. For example, in a nuclear medicine procedure, where there is an appointment for the injection of the isotopes, and then a subsequent appointment for the scan, the scan appointment would refer to the injection appointment via Appointment.previousAppointment. For representing recurring appointments, see the guidance on recurring vs. series appointments.

                Control0..1
                TypeReference(HL7® AT Scheduling Appointment Profile)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                50. Appointment.originatingAppointment
                Definition

                The originating appointment in a recurring set of related appointments.

                ShortThe originating appointment in a recurring set of appointments
                Comments

                This property is intended for use when representing a recurring set of related appointments.

                For example, a patient undergoing physical therapy may have a recurring appointment every Tuesday and Thursday. Each occurrence of the set will refer to the originating appointment, which contains the recurring template information. For representing appointment series, see the guidance on recurring vs. series appointments.

                Control0..1
                This element is affected by the following invariants: app-6
                TypeReference(HL7® AT Scheduling Appointment Profile)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                52. Appointment.start
                Definition

                Date/Time that the appointment is to take place.

                ShortWhen appointment is to take place
                Comments

                If actual start/end times are not known then the requested period start/end can be used.

                Control0..1
                This element is affected by the following invariants: app-5, app-3, app-2
                Typeinstant
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                54. Appointment.end
                Definition

                Date/Time that the appointment is to conclude.

                ShortWhen appointment is to conclude
                Comments

                If actual start/end times are not known then the requested period start/end can be used.

                Control0..1
                This element is affected by the following invariants: app-5, app-3, app-2
                Typeinstant
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                56. Appointment.minutesDuration
                Definition

                Number of minutes that the appointment is to take. This can be less than the duration between the start and end times. For example, where the actual time of appointment is only an estimate or if a 30 minute appointment is being requested, but any time would work. Also, if there is, for example, a planned 15 minute break in the middle of a long appointment, the duration may be 15 minutes less than the difference between the start and end.

                ShortCan be less than start/end (e.g. estimate)
                Control0..1
                TypepositiveInt
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                58. Appointment.requestedPeriod
                Definition

                A set of date ranges (potentially including times) that the appointment is preferred to be scheduled within.

                The duration (usually in minutes) could also be provided to indicate the length of the appointment to fill and populate the start/end times for the actual allocated time. However, in other situations the duration may be calculated by the scheduling system.

                ShortPotential date/time interval(s) requested to allocate the appointment within
                Comments

                This does not introduce a capacity for recurring appointments.

                Control0..*
                TypePeriod
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                60. Appointment.slot
                Definition

                The slots from the participants' schedules that will be filled by the appointment.

                ShortThe slots that this appointment is filling
                Control0..*
                TypeReference(HL7® AT Scheduling Slot Profile)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                62. Appointment.account
                Definition

                The set of accounts that is expected to be used for billing the activities that result from this Appointment.

                ShortThe set of accounts that may be used for billing for this Appointment
                Comments

                The specified account(s) could be those identified during pre-registration workflows in preparation for an upcoming Encounter.

                Control0..*
                TypeReference(Account)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                64. Appointment.created
                Definition

                The date that this appointment was initially created. This could be different to the meta.lastModified value on the initial entry, as this could have been before the resource was created on the FHIR server, and should remain unchanged over the lifespan of the appointment.

                ShortThe date that this appointment was initially created
                Comments

                This property is required for many use cases where the age of an appointment is considered in processing workflows for scheduling and billing of appointments.

                Control0..1
                TypedateTime
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                66. Appointment.cancellationDate
                Definition

                The date/time describing when the appointment was cancelled.

                ShortWhen the appointment was cancelled
                Comments

                If the appointment was cancelled multiple times, this would reflect the most recent cancellation.

                Control0..1
                This element is affected by the following invariants: app-7
                TypedateTime
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                68. Appointment.note
                Definition

                Additional notes/comments about the appointment.

                ShortAdditional comments
                Comments

                Additional text to aid in facilitating the appointment. For instance, a note 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.

                Typically only the concept.text will be used, however occasionally a reference to some generic documentation (or specific) and also supports coded instructions if/when they are required.

                Control0..*
                TypeAnnotation
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                70. Appointment.patientInstruction
                Definition

                While Appointment.note contains information for internal use, Appointment.patientInstructions is used to capture patient facing information about the Appointment (e.g. please bring your referral or fast from 8pm night before).

                ShortDetailed information and instructions for the patient
                Control0..*
                TypeCodeableReference(DocumentReference, Binary, Communication)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                72. Appointment.basedOn
                Definition

                The request this appointment is allocated to assess (e.g. incoming referral or procedure request).

                ShortThe request this appointment is allocated to assess
                Control0..*
                TypeReference(CarePlan, DeviceRequest, MedicationRequest, ServiceRequest)
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Alternate NamesincomingReferral
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                74. Appointment.subject
                Definition

                The patient or group associated with the appointment, if they are to be present (usually) then they should also be included in the participant backbone element.

                ShortThe patient or group associated with the appointment
                Control0..1
                TypeReference(HL7® AT Core Patient Profile, Group)
                Is Modifierfalse
                Must Supportfalse
                Summarytrue
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                76. Appointment.participant
                Definition

                List of participants involved in the appointment.

                ShortParticipants involved in appointment
                Comments

                ToDo

                Control1..*
                TypeBackboneElement
                Is Modifierfalse
                Must Supporttrue
                Summaryfalse
                Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
                ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                SlicingThis element introduces a set of slices on Appointment.participant. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • type @ actor.resolve()
                • 78. Appointment.participant.id
                  Definition

                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                  ShortUnique id for inter-element referencing
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  Typestring
                  Is Modifierfalse
                  XML FormatIn the XML format, this property is represented as an attribute.
                  Summaryfalse
                  80. Appointment.participant.extension
                  Definition

                  An Extension

                  ShortExtension
                  Control0..*
                  TypeExtension
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-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())
                  SlicingThis element introduces a set of slices on Appointment.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • value @ url
                  • 82. Appointment.participant.extension:virtualService
                    Slice NamevirtualService
                    Definition

                    Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

                    ShortVirtualServiceDetail
                    Control0..1
                    TypeExtension(VirtualServiceDetail) (Complex Extension)
                    Is Modifierfalse
                    Invariantsele-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())
                    84. Appointment.participant.modifierExtension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                    ShortExtensions that cannot be ignored even if unrecognized
                    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.

                    Control0..*
                    TypeExtension
                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                    Summarytrue
                    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 Namesextensions, user content, modifiers
                    Invariantsele-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())
                    86. Appointment.participant.type
                    Definition

                    Role of participant in the appointment.

                    ShortRole of participant in the appointment
                    Comments

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

                    Control0..*
                    This element is affected by the following invariants: app-1
                    BindingUnless not suitable, these codes SHALL be taken from ParticipantType
                    (extensible to http://hl7.org/fhir/ValueSet/encounter-participant-type|5.0.0)

                    Role of participant in encounter.

                    TypeCodeableConcept
                    Is Modifierfalse
                    Must Supportfalse
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    88. Appointment.participant.period
                    Definition

                    Participation period of the actor.

                    ShortParticipation period of the actor
                    Control0..1
                    TypePeriod
                    Is Modifierfalse
                    Must Supportfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    90. Appointment.participant.actor
                    Definition

                    The individual, device, location, or service participating in the appointment.

                    ShortThe individual, device, location, or service participating in the appointment
                    Comments

                    Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

                    Control1..1
                    This element is affected by the following invariants: app-1
                    TypeReference(Patient, Group, Practitioner, PractitionerRole, CareTeam, RelatedPerson, Device, HealthcareService, Location)
                    Is Modifierfalse
                    Must Supporttrue
                    Must Support TypesNo must-support rules about the choice of types/profiles
                    Summarytrue
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    92. Appointment.participant.actor.id
                    Definition

                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                    ShortUnique id for inter-element referencing
                    Control0..1
                    This element is affected by the following invariants: ele-1
                    Typeid
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    94. Appointment.participant.actor.extension
                    Definition

                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                    ShortAdditional 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.

                    Control0..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Alternate Namesextensions, user content
                    Invariantsele-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())
                    SlicingThis element introduces a set of slices on Appointment.participant.actor.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 96. Appointment.participant.actor.reference
                      Definition

                      A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                      ShortLiteral reference, Relative, internal or absolute URL
                      Comments

                      Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                      Control0..1
                      This element is affected by the following invariants: ref-2, ref-1
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      98. Appointment.participant.actor.type
                      Definition

                      The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                      The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                      ShortType the reference refers to (e.g. "Patient") - must be a resource in resources
                      Comments

                      This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.

                      Control0..1
                      BindingUnless not suitable, these codes SHALL be taken from ResourceType
                      (extensible to http://hl7.org/fhir/ValueSet/resource-types|5.0.0)

                      Aa resource (or, for logical models, the URI of the logical model).

                      Typeuri
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      100. Appointment.participant.actor.identifier
                      Definition

                      An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                      ShortLogical reference, when literal reference is not known
                      Comments

                      When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                      When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                      Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                      Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                      This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.

                      NoteThis is a business identifier, not a resource identifier (see discussion)
                      Control0..1
                      This element is affected by the following invariants: ref-2
                      TypeIdentifier
                      Is Modifierfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      102. Appointment.participant.actor.display
                      Definition

                      Plain text narrative that identifies the resource in addition to the resource reference.

                      ShortText alternative for the resource
                      Comments

                      ToDo

                      Control0..1
                      This element is affected by the following invariants: ref-2
                      Typestring
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supporttrue
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      104. Appointment.participant.required
                      Definition

                      Whether this participant is required to be present at the meeting. If false, the participant is optional.

                      ShortThe participant is required to attend (optional when false)
                      Comments

                      For the use-case where two doctors need to meet to discuss the results for a specific patient, and the patient is not required to be present include the patient in the subject field, but do not include them as a participant - this was formerly done prior to R5 with required='information-only'.

                      Control0..1
                      Typeboolean
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supportfalse
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      106. Appointment.participant.status
                      Definition

                      Participation status of the actor.

                      Shortaccepted | declined | tentative | needs-action
                      Control1..1
                      BindingThe codes SHALL be taken from ParticipationStatus
                      (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

                      The Participation status of an appointment.

                      Typecode
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Must Supporttrue
                      Summarytrue
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      108. Appointment.participant:HL7ATCorePatient
                      Slice NameHL7ATCorePatient
                      Definition

                      List of participants involved in the appointment.

                      ShortParticipants involved in appointment
                      Control1..*
                      TypeBackboneElement
                      Is Modifierfalse
                      Must Supporttrue
                      Summaryfalse
                      Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
                      ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      110. Appointment.participant:HL7ATCorePatient.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      Typestring
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      112. Appointment.participant:HL7ATCorePatient.extension
                      Definition

                      An Extension

                      ShortExtension
                      Control0..*
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-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())
                      SlicingThis element introduces a set of slices on Appointment.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 114. Appointment.participant:HL7ATCorePatient.extension:virtualService
                        Slice NamevirtualService
                        Definition

                        Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

                        ShortVirtualServiceDetail
                        Control0..1
                        TypeExtension(VirtualServiceDetail) (Complex Extension)
                        Is Modifierfalse
                        Invariantsele-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())
                        116. Appointment.participant:HL7ATCorePatient.modifierExtension
                        Definition

                        May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                        ShortExtensions that cannot be ignored even if unrecognized
                        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.

                        Control0..*
                        TypeExtension
                        Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                        Summarytrue
                        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 Namesextensions, user content, modifiers
                        Invariantsele-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())
                        118. Appointment.participant:HL7ATCorePatient.type
                        Definition

                        Role of participant in the appointment.

                        ShortRole of participant in the appointment
                        Comments

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

                        Control0..*
                        This element is affected by the following invariants: app-1
                        BindingUnless not suitable, these codes SHALL be taken from ParticipantType
                        (extensible to http://hl7.org/fhir/ValueSet/encounter-participant-type|5.0.0)

                        Role of participant in encounter.

                        TypeCodeableConcept
                        Is Modifierfalse
                        Must Supportfalse
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        120. Appointment.participant:HL7ATCorePatient.period
                        Definition

                        Participation period of the actor.

                        ShortParticipation period of the actor
                        Control0..1
                        TypePeriod
                        Is Modifierfalse
                        Must Supportfalse
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        122. Appointment.participant:HL7ATCorePatient.actor
                        Definition

                        The individual, device, location, or service participating in the appointment.

                        ShortThe individual, device, location, or service participating in the appointment
                        Comments

                        Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

                        Control1..1
                        This element is affected by the following invariants: app-1
                        TypeReference(Patient)
                        Is Modifierfalse
                        Must Supporttrue
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        124. Appointment.participant:HL7ATCorePatient.actor.id
                        Definition

                        Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                        ShortUnique id for inter-element referencing
                        Control0..1
                        This element is affected by the following invariants: ele-1
                        Typeid
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        126. Appointment.participant:HL7ATCorePatient.actor.extension
                        Definition

                        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                        ShortAdditional 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.

                        Control0..*
                        TypeExtension
                        Is Modifierfalse
                        Summaryfalse
                        Alternate Namesextensions, user content
                        Invariantsele-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())
                        SlicingThis element introduces a set of slices on Appointment.participant.actor.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ url
                        • 128. Appointment.participant:HL7ATCorePatient.actor.reference
                          Definition

                          A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                          ShortLiteral reference, Relative, internal or absolute URL
                          Comments

                          Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                          Control1..1
                          This element is affected by the following invariants: ref-2, ref-1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supporttrue
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          130. Appointment.participant:HL7ATCorePatient.actor.type
                          Definition

                          The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                          The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                          ShortType the reference refers to (e.g. "Patient") - must be a resource in resources
                          Comments

                          This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.

                          Control0..1
                          BindingUnless not suitable, these codes SHALL be taken from ResourceType
                          (extensible to http://hl7.org/fhir/ValueSet/resource-types|5.0.0)

                          Aa resource (or, for logical models, the URI of the logical model).

                          Typeuri
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          132. Appointment.participant:HL7ATCorePatient.actor.identifier
                          Definition

                          An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                          ShortLogical reference, when literal reference is not known
                          Comments

                          When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                          When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                          Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                          Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                          This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.

                          NoteThis is a business identifier, not a resource identifier (see discussion)
                          Control0..1
                          This element is affected by the following invariants: ref-2
                          TypeIdentifier
                          Is Modifierfalse
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          134. Appointment.participant:HL7ATCorePatient.actor.display
                          Definition

                          Plain text narrative that identifies the resource in addition to the resource reference.

                          ShortText alternative for the resource
                          Comments

                          ToDo

                          Control0..1
                          This element is affected by the following invariants: ref-2
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supporttrue
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          136. Appointment.participant:HL7ATCorePatient.required
                          Definition

                          Whether this participant is required to be present at the meeting. If false, the participant is optional.

                          ShortThe participant is required to attend (optional when false)
                          Comments

                          For the use-case where two doctors need to meet to discuss the results for a specific patient, and the patient is not required to be present include the patient in the subject field, but do not include them as a participant - this was formerly done prior to R5 with required='information-only'.

                          Control0..1
                          Typeboolean
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supportfalse
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          138. Appointment.participant:HL7ATCorePatient.status
                          Definition

                          Participation status of the actor.

                          Shortaccepted | declined | tentative | needs-action
                          Control1..1
                          BindingThe codes SHALL be taken from ParticipationStatus
                          (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

                          The Participation status of an appointment.

                          Typecode
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supporttrue
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          140. Appointment.participant:HL7ATCorePractitioner
                          Slice NameHL7ATCorePractitioner
                          Definition

                          List of participants involved in the appointment.

                          ShortParticipants involved in appointment
                          Control0..*
                          TypeBackboneElement
                          Is Modifierfalse
                          Must Supporttrue
                          Summaryfalse
                          Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
                          ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          142. Appointment.participant:HL7ATCorePractitioner.id
                          Definition

                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                          ShortUnique id for inter-element referencing
                          Control0..1
                          This element is affected by the following invariants: ele-1
                          Typestring
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          144. Appointment.participant:HL7ATCorePractitioner.extension
                          Definition

                          An Extension

                          ShortExtension
                          Control0..*
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-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())
                          SlicingThis element introduces a set of slices on Appointment.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                          • value @ url
                          • 146. Appointment.participant:HL7ATCorePractitioner.extension:virtualService
                            Slice NamevirtualService
                            Definition

                            Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

                            ShortVirtualServiceDetail
                            Control0..1
                            TypeExtension(VirtualServiceDetail) (Complex Extension)
                            Is Modifierfalse
                            Invariantsele-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())
                            148. Appointment.participant:HL7ATCorePractitioner.modifierExtension
                            Definition

                            May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                            ShortExtensions that cannot be ignored even if unrecognized
                            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.

                            Control0..*
                            TypeExtension
                            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                            Summarytrue
                            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 Namesextensions, user content, modifiers
                            Invariantsele-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())
                            150. Appointment.participant:HL7ATCorePractitioner.type
                            Definition

                            Role of participant in the appointment.

                            ShortRole of participant in the appointment
                            Comments

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

                            Control0..*
                            This element is affected by the following invariants: app-1
                            BindingUnless not suitable, these codes SHALL be taken from ParticipantType
                            (extensible to http://hl7.org/fhir/ValueSet/encounter-participant-type|5.0.0)

                            Role of participant in encounter.

                            TypeCodeableConcept
                            Is Modifierfalse
                            Must Supportfalse
                            Summarytrue
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            152. Appointment.participant:HL7ATCorePractitioner.period
                            Definition

                            Participation period of the actor.

                            ShortParticipation period of the actor
                            Control0..1
                            TypePeriod
                            Is Modifierfalse
                            Must Supportfalse
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            154. Appointment.participant:HL7ATCorePractitioner.actor
                            Definition

                            The individual, device, location, or service participating in the appointment.

                            ShortThe individual, device, location, or service participating in the appointment
                            Comments

                            Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

                            Control1..1
                            This element is affected by the following invariants: app-1
                            TypeReference(Practitioner)
                            Is Modifierfalse
                            Must Supporttrue
                            Summarytrue
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            156. Appointment.participant:HL7ATCorePractitioner.actor.id
                            Definition

                            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                            ShortUnique id for inter-element referencing
                            Control0..1
                            This element is affected by the following invariants: ele-1
                            Typeid
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            158. Appointment.participant:HL7ATCorePractitioner.actor.extension
                            Definition

                            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                            ShortAdditional 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.

                            Control0..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Alternate Namesextensions, user content
                            Invariantsele-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())
                            SlicingThis element introduces a set of slices on Appointment.participant.actor.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                            • value @ url
                            • 160. Appointment.participant:HL7ATCorePractitioner.actor.reference
                              Definition

                              A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                              ShortLiteral reference, Relative, internal or absolute URL
                              Comments

                              Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                              Control1..1
                              This element is affected by the following invariants: ref-2, ref-1
                              Typestring
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Must Supporttrue
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              162. Appointment.participant:HL7ATCorePractitioner.actor.type
                              Definition

                              The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                              The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                              ShortType the reference refers to (e.g. "Patient") - must be a resource in resources
                              Comments

                              This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.

                              Control0..1
                              BindingUnless not suitable, these codes SHALL be taken from ResourceType
                              (extensible to http://hl7.org/fhir/ValueSet/resource-types|5.0.0)

                              Aa resource (or, for logical models, the URI of the logical model).

                              Typeuri
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              164. Appointment.participant:HL7ATCorePractitioner.actor.identifier
                              Definition

                              An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                              ShortLogical reference, when literal reference is not known
                              Comments

                              When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                              When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                              Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                              Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                              This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.

                              NoteThis is a business identifier, not a resource identifier (see discussion)
                              Control0..1
                              This element is affected by the following invariants: ref-2
                              TypeIdentifier
                              Is Modifierfalse
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              166. Appointment.participant:HL7ATCorePractitioner.actor.display
                              Definition

                              Plain text narrative that identifies the resource in addition to the resource reference.

                              ShortText alternative for the resource
                              Comments

                              ToDo

                              Control0..1
                              This element is affected by the following invariants: ref-2
                              Typestring
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Must Supporttrue
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              168. Appointment.participant:HL7ATCorePractitioner.required
                              Definition

                              Whether this participant is required to be present at the meeting. If false, the participant is optional.

                              ShortThe participant is required to attend (optional when false)
                              Comments

                              For the use-case where two doctors need to meet to discuss the results for a specific patient, and the patient is not required to be present include the patient in the subject field, but do not include them as a participant - this was formerly done prior to R5 with required='information-only'.

                              Control0..1
                              Typeboolean
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Must Supportfalse
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              170. Appointment.participant:HL7ATCorePractitioner.status
                              Definition

                              Participation status of the actor.

                              Shortaccepted | declined | tentative | needs-action
                              Control1..1
                              BindingThe codes SHALL be taken from ParticipationStatus
                              (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

                              The Participation status of an appointment.

                              Typecode
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Must Supporttrue
                              Summarytrue
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              172. Appointment.participant:HL7ATCorePractitionerRole
                              Slice NameHL7ATCorePractitionerRole
                              Definition

                              List of participants involved in the appointment.

                              ShortParticipants involved in appointment
                              Control0..*
                              TypeBackboneElement
                              Is Modifierfalse
                              Must Supporttrue
                              Summaryfalse
                              Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
                              ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              174. Appointment.participant:HL7ATCorePractitionerRole.id
                              Definition

                              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                              ShortUnique id for inter-element referencing
                              Control0..1
                              This element is affected by the following invariants: ele-1
                              Typestring
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              176. Appointment.participant:HL7ATCorePractitionerRole.extension
                              Definition

                              An Extension

                              ShortExtension
                              Control0..*
                              TypeExtension
                              Is Modifierfalse
                              Summaryfalse
                              Invariantsele-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())
                              SlicingThis element introduces a set of slices on Appointment.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                              • value @ url
                              • 178. Appointment.participant:HL7ATCorePractitionerRole.extension:virtualService
                                Slice NamevirtualService
                                Definition

                                Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

                                ShortVirtualServiceDetail
                                Control0..1
                                TypeExtension(VirtualServiceDetail) (Complex Extension)
                                Is Modifierfalse
                                Invariantsele-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())
                                180. Appointment.participant:HL7ATCorePractitionerRole.modifierExtension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                                ShortExtensions that cannot be ignored even if unrecognized
                                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.

                                Control0..*
                                TypeExtension
                                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                Summarytrue
                                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 Namesextensions, user content, modifiers
                                Invariantsele-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())
                                182. Appointment.participant:HL7ATCorePractitionerRole.type
                                Definition

                                Role of participant in the appointment.

                                ShortRole of participant in the appointment
                                Comments

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

                                Control0..*
                                This element is affected by the following invariants: app-1
                                BindingUnless not suitable, these codes SHALL be taken from ParticipantType
                                (extensible to http://hl7.org/fhir/ValueSet/encounter-participant-type|5.0.0)

                                Role of participant in encounter.

                                TypeCodeableConcept
                                Is Modifierfalse
                                Must Supportfalse
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                184. Appointment.participant:HL7ATCorePractitionerRole.period
                                Definition

                                Participation period of the actor.

                                ShortParticipation period of the actor
                                Control0..1
                                TypePeriod
                                Is Modifierfalse
                                Must Supportfalse
                                Summaryfalse
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                186. Appointment.participant:HL7ATCorePractitionerRole.actor
                                Definition

                                The individual, device, location, or service participating in the appointment.

                                ShortThe individual, device, location, or service participating in the appointment
                                Comments

                                Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

                                Control1..1
                                This element is affected by the following invariants: app-1
                                TypeReference(PractitionerRole)
                                Is Modifierfalse
                                Must Supporttrue
                                Summarytrue
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                188. Appointment.participant:HL7ATCorePractitionerRole.actor.id
                                Definition

                                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                ShortUnique id for inter-element referencing
                                Control0..1
                                This element is affected by the following invariants: ele-1
                                Typeid
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                190. Appointment.participant:HL7ATCorePractitionerRole.actor.extension
                                Definition

                                May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                                ShortAdditional 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.

                                Control0..*
                                TypeExtension
                                Is Modifierfalse
                                Summaryfalse
                                Alternate Namesextensions, user content
                                Invariantsele-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())
                                SlicingThis element introduces a set of slices on Appointment.participant.actor.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                • value @ url
                                • 192. Appointment.participant:HL7ATCorePractitionerRole.actor.reference
                                  Definition

                                  A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                  ShortLiteral reference, Relative, internal or absolute URL
                                  Comments

                                  Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                  Control1..1
                                  This element is affected by the following invariants: ref-2, ref-1
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Must Supporttrue
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  194. Appointment.participant:HL7ATCorePractitionerRole.actor.type
                                  Definition

                                  The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                  The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                  ShortType the reference refers to (e.g. "Patient") - must be a resource in resources
                                  Comments

                                  This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.

                                  Control0..1
                                  BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                  (extensible to http://hl7.org/fhir/ValueSet/resource-types|5.0.0)

                                  Aa resource (or, for logical models, the URI of the logical model).

                                  Typeuri
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  196. Appointment.participant:HL7ATCorePractitionerRole.actor.identifier
                                  Definition

                                  An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                                  ShortLogical reference, when literal reference is not known
                                  Comments

                                  When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                  When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                  Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                  Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                  This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.

                                  NoteThis is a business identifier, not a resource identifier (see discussion)
                                  Control0..1
                                  This element is affected by the following invariants: ref-2
                                  TypeIdentifier
                                  Is Modifierfalse
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  198. Appointment.participant:HL7ATCorePractitionerRole.actor.display
                                  Definition

                                  Plain text narrative that identifies the resource in addition to the resource reference.

                                  ShortText alternative for the resource
                                  Comments

                                  ToDo

                                  Control0..1
                                  This element is affected by the following invariants: ref-2
                                  Typestring
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Must Supporttrue
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  200. Appointment.participant:HL7ATCorePractitionerRole.required
                                  Definition

                                  Whether this participant is required to be present at the meeting. If false, the participant is optional.

                                  ShortThe participant is required to attend (optional when false)
                                  Comments

                                  For the use-case where two doctors need to meet to discuss the results for a specific patient, and the patient is not required to be present include the patient in the subject field, but do not include them as a participant - this was formerly done prior to R5 with required='information-only'.

                                  Control0..1
                                  Typeboolean
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Must Supportfalse
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  202. Appointment.participant:HL7ATCorePractitionerRole.status
                                  Definition

                                  Participation status of the actor.

                                  Shortaccepted | declined | tentative | needs-action
                                  Control1..1
                                  BindingThe codes SHALL be taken from ParticipationStatus
                                  (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

                                  The Participation status of an appointment.

                                  Typecode
                                  Is Modifierfalse
                                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                  Must Supporttrue
                                  Summarytrue
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  204. Appointment.participant:HL7ATSchedulingHealthcareService
                                  Slice NameHL7ATSchedulingHealthcareService
                                  Definition

                                  List of participants involved in the appointment.

                                  ShortParticipants involved in appointment
                                  Control0..*
                                  TypeBackboneElement
                                  Is Modifierfalse
                                  Must Supporttrue
                                  Summaryfalse
                                  Invariantsapp-1: Either the type or actor on the participant SHALL be specified (type.exists() or actor.exists())
                                  ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  206. Appointment.participant:HL7ATSchedulingHealthcareService.id
                                  Definition

                                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                  ShortUnique id for inter-element referencing
                                  Control0..1
                                  This element is affected by the following invariants: ele-1
                                  Typestring
                                  Is Modifierfalse
                                  XML FormatIn the XML format, this property is represented as an attribute.
                                  Summaryfalse
                                  208. Appointment.participant:HL7ATSchedulingHealthcareService.extension
                                  Definition

                                  An Extension

                                  ShortExtension
                                  Control0..*
                                  TypeExtension
                                  Is Modifierfalse
                                  Summaryfalse
                                  Invariantsele-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())
                                  SlicingThis element introduces a set of slices on Appointment.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                  • value @ url
                                  • 210. Appointment.participant:HL7ATSchedulingHealthcareService.extension:virtualService
                                    Slice NamevirtualService
                                    Definition

                                    Represents personalized details for a virtual service. This extension is meant to be used on appointment.participant if personalized Details (e.g. individual links or secrets) per participant exist. If the details are the same for all participants, Appointment.virtualService should be used instead. Warning! Due to a bug, this extension contains a workaround. Instead of the custom complex data structure defined here, VirtualServiceDetail will be used as an extension on Appointment.participant in the future

                                    ShortVirtualServiceDetail
                                    Control0..1
                                    TypeExtension(VirtualServiceDetail) (Complex Extension)
                                    Is Modifierfalse
                                    Invariantsele-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())
                                    212. Appointment.participant:HL7ATSchedulingHealthcareService.modifierExtension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                                    ShortExtensions that cannot be ignored even if unrecognized
                                    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.

                                    Control0..*
                                    TypeExtension
                                    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                    Summarytrue
                                    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 Namesextensions, user content, modifiers
                                    Invariantsele-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())
                                    214. Appointment.participant:HL7ATSchedulingHealthcareService.type
                                    Definition

                                    Role of participant in the appointment.

                                    ShortRole of participant in the appointment
                                    Comments

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

                                    Control0..*
                                    This element is affected by the following invariants: app-1
                                    BindingUnless not suitable, these codes SHALL be taken from ParticipantType
                                    (extensible to http://hl7.org/fhir/ValueSet/encounter-participant-type|5.0.0)

                                    Role of participant in encounter.

                                    TypeCodeableConcept
                                    Is Modifierfalse
                                    Must Supportfalse
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    216. Appointment.participant:HL7ATSchedulingHealthcareService.period
                                    Definition

                                    Participation period of the actor.

                                    ShortParticipation period of the actor
                                    Control0..1
                                    TypePeriod
                                    Is Modifierfalse
                                    Must Supportfalse
                                    Summaryfalse
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    218. Appointment.participant:HL7ATSchedulingHealthcareService.actor
                                    Definition

                                    The individual, device, location, or service participating in the appointment.

                                    ShortThe individual, device, location, or service participating in the appointment
                                    Comments

                                    Where a CareTeam is provided, this does not imply that the entire team is included, just a single member from the group with the appropriate role. Where multiple members are required, please include the CareTeam the required number of times.

                                    Control1..1
                                    This element is affected by the following invariants: app-1
                                    TypeReference(HealthcareService)
                                    Is Modifierfalse
                                    Must Supporttrue
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    220. Appointment.participant:HL7ATSchedulingHealthcareService.actor.id
                                    Definition

                                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                    ShortUnique id for inter-element referencing
                                    Control0..1
                                    This element is affected by the following invariants: ele-1
                                    Typeid
                                    Is Modifierfalse
                                    XML FormatIn the XML format, this property is represented as an attribute.
                                    Summaryfalse
                                    222. Appointment.participant:HL7ATSchedulingHealthcareService.actor.extension
                                    Definition

                                    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                                    ShortAdditional 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.

                                    Control0..*
                                    TypeExtension
                                    Is Modifierfalse
                                    Summaryfalse
                                    Alternate Namesextensions, user content
                                    Invariantsele-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())
                                    SlicingThis element introduces a set of slices on Appointment.participant.actor.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                    • value @ url
                                    • 224. Appointment.participant:HL7ATSchedulingHealthcareService.actor.reference
                                      Definition

                                      A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources.

                                      ShortLiteral reference, Relative, internal or absolute URL
                                      Comments

                                      Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server.

                                      Control1..1
                                      This element is affected by the following invariants: ref-2, ref-1
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supporttrue
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      226. Appointment.participant:HL7ATSchedulingHealthcareService.actor.type
                                      Definition

                                      The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent.

                                      The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources).

                                      ShortType the reference refers to (e.g. "Patient") - must be a resource in resources
                                      Comments

                                      This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a known RESTful URL) or by resolving the target of the reference.

                                      Control0..1
                                      BindingUnless not suitable, these codes SHALL be taken from ResourceType
                                      (extensible to http://hl7.org/fhir/ValueSet/resource-types|5.0.0)

                                      Aa resource (or, for logical models, the URI of the logical model).

                                      Typeuri
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      228. Appointment.participant:HL7ATSchedulingHealthcareService.actor.identifier
                                      Definition

                                      An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference.

                                      ShortLogical reference, when literal reference is not known
                                      Comments

                                      When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy.

                                      When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference

                                      Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it.

                                      Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any).

                                      This element only allows for a single identifier. In the case where additional identifers are required, use the http://hl7.org/fhir/StructureDefinition/additionalIdentifier extension.

                                      NoteThis is a business identifier, not a resource identifier (see discussion)
                                      Control0..1
                                      This element is affected by the following invariants: ref-2
                                      TypeIdentifier
                                      Is Modifierfalse
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      230. Appointment.participant:HL7ATSchedulingHealthcareService.actor.display
                                      Definition

                                      Plain text narrative that identifies the resource in addition to the resource reference.

                                      ShortText alternative for the resource
                                      Comments

                                      ToDo

                                      Control0..1
                                      This element is affected by the following invariants: ref-2
                                      Typestring
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supporttrue
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      232. Appointment.participant:HL7ATSchedulingHealthcareService.required
                                      Definition

                                      Whether this participant is required to be present at the meeting. If false, the participant is optional.

                                      ShortThe participant is required to attend (optional when false)
                                      Comments

                                      For the use-case where two doctors need to meet to discuss the results for a specific patient, and the patient is not required to be present include the patient in the subject field, but do not include them as a participant - this was formerly done prior to R5 with required='information-only'.

                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      234. Appointment.participant:HL7ATSchedulingHealthcareService.status
                                      Definition

                                      Participation status of the actor.

                                      Shortaccepted | declined | tentative | needs-action
                                      Control1..1
                                      BindingThe codes SHALL be taken from ParticipationStatus
                                      (required to http://hl7.org/fhir/ValueSet/participationstatus|5.0.0)

                                      The Participation status of an appointment.

                                      Typecode
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supporttrue
                                      Summarytrue
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      236. Appointment.recurrenceId
                                      Definition

                                      The sequence number that identifies a specific appointment in a recurring pattern.

                                      ShortThe sequence number in the recurrence
                                      Control0..1
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      238. Appointment.occurrenceChanged
                                      Definition

                                      This appointment varies from the recurring pattern.

                                      ShortIndicates that this appointment varies from a recurrence pattern
                                      Comments

                                      For example, if a patient has physical therapy appointments every Tuesday and Thursday, but due to a national holiday, a single occurrence was rescheduled to a different day, while the rest of the recurring series remained on Tuesday / Thursday.

                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      240. Appointment.recurrenceTemplate
                                      Definition

                                      The details of the recurrence pattern or template that is used to generate recurring appointments.

                                      ShortDetails of the recurrence pattern/template used to generate occurrences
                                      Control0..*
                                      This element is affected by the following invariants: app-6
                                      TypeBackboneElement
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      242. Appointment.recurrenceTemplate.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      This element is affected by the following invariants: ele-1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      244. Appointment.recurrenceTemplate.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                                      ShortAdditional 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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-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())
                                      246. Appointment.recurrenceTemplate.modifierExtension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                                      ShortExtensions that cannot be ignored even if unrecognized
                                      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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                      Summarytrue
                                      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 Namesextensions, user content, modifiers
                                      Invariantsele-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())
                                      248. Appointment.recurrenceTemplate.timezone
                                      Definition

                                      The timezone of the recurring appointment occurrences.

                                      ShortThe timezone of the occurrences
                                      Control0..1
                                      BindingThe codes SHALL be taken from IANATimezones
                                      (required to http://hl7.org/fhir/ValueSet/timezones|5.0.0)

                                      IANA Timezones (BCP 175)

                                      TypeCodeableConcept
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      250. Appointment.recurrenceTemplate.recurrenceType
                                      Definition

                                      How often the appointment series should recur.

                                      ShortThe frequency of the recurrence
                                      Control1..1
                                      BindingThe codes SHOULD be taken from AppointmentRecurrenceType
                                      (preferred to http://hl7.org/fhir/ValueSet/appointment-recurrrence-type|5.0.0)

                                      IANA Timezones (BCP 175)

                                      TypeCodeableConcept
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      252. Appointment.recurrenceTemplate.lastOccurrenceDate
                                      Definition

                                      Recurring appointments will not occur after this date.

                                      ShortThe date when the recurrence should end
                                      Control0..1
                                      Typedate
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      254. Appointment.recurrenceTemplate.occurrenceCount
                                      Definition

                                      How many appointments are planned in the recurrence.

                                      ShortThe number of planned occurrences
                                      Control0..1
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      256. Appointment.recurrenceTemplate.occurrenceDate
                                      Definition

                                      The list of specific dates that will have appointments generated.

                                      ShortSpecific dates for a recurring set of appointments (no template)
                                      Control0..*
                                      Typedate
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      258. Appointment.recurrenceTemplate.weeklyTemplate
                                      Definition

                                      Information about weekly recurring appointments.

                                      ShortInformation about weekly recurring appointments
                                      Control0..1
                                      TypeBackboneElement
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      260. Appointment.recurrenceTemplate.weeklyTemplate.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      This element is affected by the following invariants: ele-1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      262. Appointment.recurrenceTemplate.weeklyTemplate.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                                      ShortAdditional 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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-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())
                                      264. Appointment.recurrenceTemplate.weeklyTemplate.modifierExtension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                                      ShortExtensions that cannot be ignored even if unrecognized
                                      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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                      Summarytrue
                                      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 Namesextensions, user content, modifiers
                                      Invariantsele-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())
                                      266. Appointment.recurrenceTemplate.weeklyTemplate.monday
                                      Definition

                                      Indicates that recurring appointments should occur on Mondays.

                                      ShortRecurs on Mondays
                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      268. Appointment.recurrenceTemplate.weeklyTemplate.tuesday
                                      Definition

                                      Indicates that recurring appointments should occur on Tuesdays.

                                      ShortRecurs on Tuesday
                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      270. Appointment.recurrenceTemplate.weeklyTemplate.wednesday
                                      Definition

                                      Indicates that recurring appointments should occur on Wednesdays.

                                      ShortRecurs on Wednesday
                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      272. Appointment.recurrenceTemplate.weeklyTemplate.thursday
                                      Definition

                                      Indicates that recurring appointments should occur on Thursdays.

                                      ShortRecurs on Thursday
                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      274. Appointment.recurrenceTemplate.weeklyTemplate.friday
                                      Definition

                                      Indicates that recurring appointments should occur on Fridays.

                                      ShortRecurs on Friday
                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      276. Appointment.recurrenceTemplate.weeklyTemplate.saturday
                                      Definition

                                      Indicates that recurring appointments should occur on Saturdays.

                                      ShortRecurs on Saturday
                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      278. Appointment.recurrenceTemplate.weeklyTemplate.sunday
                                      Definition

                                      Indicates that recurring appointments should occur on Sundays.

                                      ShortRecurs on Sunday
                                      Control0..1
                                      Typeboolean
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      280. Appointment.recurrenceTemplate.weeklyTemplate.weekInterval
                                      Definition

                                      The interval defines if the recurrence is every nth week. The default is every week, so it is expected that this value will be 2 or more.

                                      e.g. For recurring every second week this interval would be 2, or every third week the interval would be 3.

                                      ShortRecurs every nth week
                                      Control0..1
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      282. Appointment.recurrenceTemplate.monthlyTemplate
                                      Definition

                                      Information about monthly recurring appointments.

                                      ShortInformation about monthly recurring appointments
                                      Control0..1
                                      TypeBackboneElement
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      284. Appointment.recurrenceTemplate.monthlyTemplate.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      This element is affected by the following invariants: ele-1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      286. Appointment.recurrenceTemplate.monthlyTemplate.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                                      ShortAdditional 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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-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())
                                      288. Appointment.recurrenceTemplate.monthlyTemplate.modifierExtension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                                      ShortExtensions that cannot be ignored even if unrecognized
                                      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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                      Summarytrue
                                      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 Namesextensions, user content, modifiers
                                      Invariantsele-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())
                                      290. Appointment.recurrenceTemplate.monthlyTemplate.dayOfMonth
                                      Definition

                                      Indicates that appointments in the series of recurring appointments should occur on a specific day of the month.

                                      ShortRecurs on a specific day of the month
                                      Control0..1
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      292. Appointment.recurrenceTemplate.monthlyTemplate.nthWeekOfMonth
                                      Definition

                                      Indicates which week within a month the appointments in the series of recurring appointments should occur on.

                                      ShortIndicates which week of the month the appointment should occur
                                      Control0..1
                                      BindingThe codes SHALL be taken from WeekOfMonth
                                      (required to http://hl7.org/fhir/ValueSet/week-of-month|5.0.0)

                                      The set of weeks in a month.

                                      TypeCoding
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      294. Appointment.recurrenceTemplate.monthlyTemplate.dayOfWeek
                                      Definition

                                      Indicates which day of the week the recurring appointments should occur each nth week.

                                      ShortIndicates which day of the week the appointment should occur
                                      Comments

                                      This property is intended to be used with Appointment.recurrenceTemplate.monthly.nthWeek.

                                      Control0..1
                                      BindingThe codes SHALL be taken from DaysOfWeek
                                      (required to http://hl7.org/fhir/ValueSet/days-of-week|5.0.0)

                                      The days of the week.

                                      TypeCoding
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      296. Appointment.recurrenceTemplate.monthlyTemplate.monthInterval
                                      Definition

                                      Indicates that recurring appointments should occur every nth month.

                                      ShortRecurs every nth month
                                      Control1..1
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      298. Appointment.recurrenceTemplate.yearlyTemplate
                                      Definition

                                      Information about yearly recurring appointments.

                                      ShortInformation about yearly recurring appointments
                                      Control0..1
                                      TypeBackboneElement
                                      Is Modifierfalse
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      300. Appointment.recurrenceTemplate.yearlyTemplate.id
                                      Definition

                                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                                      ShortUnique id for inter-element referencing
                                      Control0..1
                                      This element is affected by the following invariants: ele-1
                                      Typestring
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      302. Appointment.recurrenceTemplate.yearlyTemplate.extension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, 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.

                                      ShortAdditional 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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-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())
                                      304. Appointment.recurrenceTemplate.yearlyTemplate.modifierExtension
                                      Definition

                                      May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained 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 managable, 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. 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).

                                      ShortExtensions that cannot be ignored even if unrecognized
                                      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.

                                      Control0..*
                                      TypeExtension
                                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                      Summarytrue
                                      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 Namesextensions, user content, modifiers
                                      Invariantsele-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())
                                      306. Appointment.recurrenceTemplate.yearlyTemplate.yearInterval
                                      Definition

                                      Appointment recurs every nth year.

                                      ShortRecurs every nth year
                                      Control1..1
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      308. Appointment.recurrenceTemplate.excludingDate
                                      Definition

                                      Any dates, such as holidays, that should be excluded from the recurrence.

                                      ShortAny dates that should be excluded from the series
                                      Comments

                                      excludingDate is an alternative to excludingRecurrenceId. You may say either that 12/25/XXXX should be excluded using excludingDate, or you may indicate the recurrenceId of the appointment that would fall on the excluded date in the excludingRecurrenceId property.

                                      Control0..*
                                      Typedate
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      310. Appointment.recurrenceTemplate.excludingRecurrenceId
                                      Definition

                                      Any dates, such as holidays, that should be excluded from the recurrence.

                                      ShortAny recurrence IDs that should be excluded from the recurrence
                                      Comments

                                      excludingRecurrenceId is an alternative to excludingDate. You may say either that 12/25/XXXX should be excluded using excludingDate, or you may indicate the recurrenceId of the appointment that would fall on the excluded date in the excludingRecurrenceId property.

                                      Control0..*
                                      TypepositiveInt
                                      Is Modifierfalse
                                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                      Must Supportfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))