Virtually Healthcare HL7 FHIR Implementation Guide
0.1.0-current - ci-build United Kingdom flag

Virtually Healthcare HL7 FHIR Implementation Guide, published by Virtually Healthcare. This guide is not an authorized publication; it is the continuous build for version 0.1.0-current built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/Virtually-Healthcare/Virtually-Healthcare-FHIR-Implementation-Guide/ and changes regularly. See the Directory of published versions

Resource Profile: Encounter - Detailed Descriptions

Draft as of 2024-11-06

Definitions for the Encounter resource profile.

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

0. Encounter

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

0. Encounter
Definition

An interaction between a patient and healthcare provider(s) for the purpose of providing healthcare service(s) or assessing the health status of a patient.

ShortAn interaction during which services are provided to the patient
Control0..*
Is Modifierfalse
Alternate NamesVisit
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.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-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
2. Encounter.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 it's narrative along with other profiles, value sets, etc.

Control0..1
This element is affected by the following invariants: ele-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 it's meaning or interpretation
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()))
4. Encounter.extension:dischargeMethod
Slice NamedischargeMethod
Definition

This extension has been developed to demonstrate the representation of the method by which a patient was discharged from hospital.

ShortAn extension to support the method of discharge from a hospital.
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..1
This element is affected by the following invariants: ele-1
TypeExtension(Extension UK Core Discharge Method) (Extension Type: CodeableConcept)
Standard StatusNormative (from Trial Use)
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())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
6. Encounter.extension:emergencyCareDischargeStatus
Slice NameemergencyCareDischargeStatus
Definition

This extension has been developed to demonstrate the representation of the status of a patient on discharge from an Emergency Care Department.

ShortAn extension to support the status of an individual on discharge from an Emergency Care Department.
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..1
This element is affected by the following invariants: ele-1
TypeExtension(Extension UK Core Emergency Care Discharge Status) (Extension Type: CodeableConcept)
Standard StatusNormative (from Trial Use)
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())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
8. Encounter.extension:legalStatus
Slice NamelegalStatus
Definition

Information relating to a patient's legal status on admission or discharge.

ShortInformation relating to a patient's legal status on admission or discharge.
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..*
This element is affected by the following invariants: ele-1
TypeExtension(Extension UK Core Legal Status) (Complex Extension)
Standard StatusNormative (from Trial Use)
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())
10. Encounter.extension:OutcomeOfAttendance
Slice NameOutcomeOfAttendance
Definition

This extension has been developed to demonstrate the representation of the outcome of an Outpatient attendance.

ShortAn extension to support the outcome of an Outpatient attendance.
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..1
This element is affected by the following invariants: ele-1
TypeExtension(Extension UK Core Outcome Of Attendance) (Extension Type: CodeableConcept)
Standard StatusNormative (from Trial Use)
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())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
12. Encounter.modifierExtension
Definition

May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

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..*
This element is affected by the following invariants: ele-1
TypeExtension
Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Standard StatusNormative (from Trial Use)
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())
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on Encounter.modifierExtension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 14. Encounter.identifier
    Definition

    Identifier(s) by which this encounter is known.

    ShortIdentifier(s) by which this encounter is known
    NoteThis is a business identifier, not a resource identifier (see discussion)
    Control0..*
    This element is affected by the following invariants: ele-1
    TypeIdentifier
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    16. Encounter.status
    Definition

    planned | arrived | triaged | in-progress | onleave | finished | cancelled +.

    Shortplanned | arrived | triaged | in-progress | onleave | finished | cancelled +
    Comments

    Note that internal business rules will determine the appropriate transitions that may occur between statuses (and also classes).

    Control1..1
    This element is affected by the following invariants: ele-1
    BindingThe codes SHALL be taken from EncounterStatushttp://hl7.org/fhir/ValueSet/encounter-status|4.0.1
    (required to http://hl7.org/fhir/ValueSet/encounter-status|4.0.1)

    Current state of the encounter.

    Typecode
    Is Modifiertrue because This element is labeled 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 Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    18. Encounter.class
    Definition

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

    ShortClassification of patient encounter
    Comments

    Codes may be defined very casually in enumerations or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information.

    Control1..1
    This element is affected by the following invariants: ele-1
    BindingUnless not suitable, these codes SHALL be taken from ActEncounterCodehttp://terminology.hl7.org/ValueSet/v3-ActEncounterCode
    (extensible to http://terminology.hl7.org/ValueSet/v3-ActEncounterCode)

    Classification of the encounter.

    TypeCoding
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    20. Encounter.subject
    Definition

    The patient or group present at the encounter.

    ShortThe patient or group present at the encounter
    Comments

    While the encounter is always about the patient, the patient might not actually be known in all contexts of use, and there may be a group of patients that could be anonymous (such as in a group therapy for Alcoholics Anonymous - where the recording of the encounter could be used for billing on the number of people/staff and not important to the context of the specific patients) or alternately in veterinary care a herd of sheep receiving treatment (where the animals are not individually tracked).

    Control0..1
    This element is affected by the following invariants: ele-1
    TypeReference(Patient, Group)
    Is Modifierfalse
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    Summarytrue
    Alternate Namespatient
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
    22. Encounter.participant
    Definition

    The list of people responsible for providing the service.

    ShortList of participants involved in the encounter
    Control0..*
    This element is affected by the following invariants: ele-1
    TypeBackboneElement
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    24. Encounter.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. 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..*
    This element is affected by the following invariants: ele-1
    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())
    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
    26. Encounter.reasonCode
    Definition

    Reason the encounter takes place, expressed as a code. For admissions, this can be used for a coded admission diagnosis.

    ShortCoded reason the encounter takes place
    Comments

    For systems that need to know which was the primary diagnosis, these will be marked with the standard extension primaryDiagnosis (which is a sequence value rather than a flag, 1 = primary diagnosis).

    Control0..*
    This element is affected by the following invariants: ele-1
    BindingThe codes SHOULD be taken from EncounterReasonCodeshttp://hl7.org/fhir/ValueSet/encounter-reason
    (preferred to http://hl7.org/fhir/ValueSet/encounter-reason)

    Reason why the encounter takes place.

    TypeCodeableConcept
    Is Modifierfalse
    Must Supporttrue
    Summarytrue
    Alternate NamesIndication, Admission diagnosis
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    28. Encounter.reasonReference
    Definition

    Reason the encounter takes place, expressed as a code. For admissions, this can be used for a coded admission diagnosis.

    ShortReason the encounter takes place (reference)
    Comments

    For systems that need to know which was the primary diagnosis, these will be marked with the standard extension primaryDiagnosis (which is a sequence value rather than a flag, 1 = primary diagnosis).

    Control0..*
    This element is affected by the following invariants: ele-1
    TypeReference(Condition, Procedure, Observation, ImmunizationRecommendation)
    Is Modifierfalse
    Must Supporttrue
    Must Support TypesNo must-support rules about the choice of types/profiles
    Summarytrue
    Alternate NamesIndication, Admission diagnosis
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))

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

    0. Encounter
    Definition

    An interaction between a patient and healthcare provider(s) for the purpose of providing healthcare service(s) or assessing the health status of a patient.

    ShortAn interaction during which services are provided to the patient
    Control0..*
    Alternate NamesVisit
    Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.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-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
    dom-6: A resource should have narrative for robust management (text.`div`.exists())
    dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
    2. Encounter.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

    The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

    Control0..1
    Typeid
    Summarytrue
    4. Encounter.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
    This element is affected by the following invariants: ele-1
    TypeMeta
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    6. Encounter.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 it's narrative along with other profiles, value sets, etc.

    Control0..1
    This element is affected by the following invariants: ele-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 it's meaning or interpretation
    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()))
    8. Encounter.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
    This element is affected by the following invariants: ele-1
    BindingThe codes SHOULD be taken from CommonLanguages
    (preferred to http://hl7.org/fhir/ValueSet/languages)

    A human language.

    Additional BindingsPurpose
    AllLanguagesMax Binding
    Typecode
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    10. Encounter.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 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: ele-1
    TypeNarrative
    Alternate Namesnarrative, html, xhtml, display
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    12. Encounter.contained
    Definition

    These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.

    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..*
    TypeResource
    Alternate Namesinline resources, anonymous resources, contained resources
    14. Encounter.extension
    Definition

    May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

    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..*
    This element is affected by the following invariants: ele-1
    TypeExtension
    Standard StatusNormative (from Trial Use)
    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 Encounter.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ url
    • 16. Encounter.extension:dischargeMethod
      Slice NamedischargeMethod
      Definition

      This extension has been developed to demonstrate the representation of the method by which a patient was discharged from hospital.

      ShortAn extension to support the method of discharge from a hospital.
      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..1
      This element is affected by the following invariants: ele-1
      TypeExtension(Extension UK Core Discharge Method) (Extension Type: CodeableConcept)
      Standard StatusNormative (from Trial Use)
      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())
      18. Encounter.extension:emergencyCareDischargeStatus
      Slice NameemergencyCareDischargeStatus
      Definition

      This extension has been developed to demonstrate the representation of the status of a patient on discharge from an Emergency Care Department.

      ShortAn extension to support the status of an individual on discharge from an Emergency Care Department.
      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..1
      This element is affected by the following invariants: ele-1
      TypeExtension(Extension UK Core Emergency Care Discharge Status) (Extension Type: CodeableConcept)
      Standard StatusNormative (from Trial Use)
      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. Encounter.extension:legalStatus
      Slice NamelegalStatus
      Definition

      Information relating to a patient's legal status on admission or discharge.

      ShortInformation relating to a patient's legal status on admission or discharge.
      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..*
      This element is affected by the following invariants: ele-1
      TypeExtension(Extension UK Core Legal Status) (Complex Extension)
      Standard StatusNormative (from Trial Use)
      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())
      22. Encounter.extension:OutcomeOfAttendance
      Slice NameOutcomeOfAttendance
      Definition

      This extension has been developed to demonstrate the representation of the outcome of an Outpatient attendance.

      ShortAn extension to support the outcome of an Outpatient attendance.
      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..1
      This element is affected by the following invariants: ele-1
      TypeExtension(Extension UK Core Outcome Of Attendance) (Extension Type: CodeableConcept)
      Standard StatusNormative (from Trial Use)
      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())
      24. Encounter.modifierExtension
      Definition

      May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

      Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

      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..*
      This element is affected by the following invariants: ele-1
      TypeExtension
      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
      Standard StatusNormative (from Trial Use)
      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())
      SlicingThis element introduces a set of slices on Encounter.modifierExtension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 26. Encounter.identifier
        Definition

        Identifier(s) by which this encounter is known.

        ShortIdentifier(s) by which this encounter is known
        NoteThis is a business identifier, not a resource identifier (see discussion)
        Control0..*
        This element is affected by the following invariants: ele-1
        TypeIdentifier
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        28. Encounter.status
        Definition

        planned | arrived | triaged | in-progress | onleave | finished | cancelled +.

        Shortplanned | arrived | triaged | in-progress | onleave | finished | cancelled +
        Comments

        Note that internal business rules will determine the appropriate transitions that may occur between statuses (and also classes).

        Control1..1
        This element is affected by the following invariants: ele-1
        BindingThe codes SHALL be taken from EncounterStatus
        (required to http://hl7.org/fhir/ValueSet/encounter-status|4.0.1)

        Current state of the encounter.

        Typecode
        Is Modifiertrue because This element is labeled 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 Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        30. Encounter.statusHistory
        Definition

        The status history permits the encounter resource to contain the status history without needing to read through the historical versions of the resource, or even have the server store them.

        ShortList of past encounter statuses
        Comments

        The current status is always found in the current version of the resource, not the status history.

        Control0..*
        This element is affected by the following invariants: ele-1
        TypeBackboneElement
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        32. Encounter.statusHistory.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
        Typestring
        XML FormatIn the XML format, this property is represented as an attribute.
        34. Encounter.statusHistory.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

        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..*
        This element is affected by the following invariants: ele-1
        TypeExtension
        Standard StatusNormative (from Trial Use)
        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 Encounter.statusHistory.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ url
        • 36. Encounter.statusHistory.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. 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..*
          This element is affected by the following invariants: ele-1
          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())
          38. Encounter.statusHistory.status
          Definition

          planned | arrived | triaged | in-progress | onleave | finished | cancelled +.

          Shortplanned | arrived | triaged | in-progress | onleave | finished | cancelled +
          Comments

          Note that FHIR strings SHALL NOT exceed 1MB in size

          Control1..1
          This element is affected by the following invariants: ele-1
          BindingThe codes SHALL be taken from EncounterStatus
          (required to http://hl7.org/fhir/ValueSet/encounter-status|4.0.1)

          Current state of the encounter.

          Typecode
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          40. Encounter.statusHistory.period
          Definition

          The time that the episode was in the specified status.

          ShortThe time that the episode was in the specified status
          Comments

          A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times").

          Period is not used for a duration (a measure of elapsed time). See Duration.

          Control1..1
          This element is affected by the following invariants: ele-1
          TypePeriod
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          per-1: If present, start SHALL have a lower value than end (start.hasValue().not() or end.hasValue().not() or (start <= end))
          42. Encounter.class
          Definition

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

          ShortClassification of patient encounter
          Comments

          Codes may be defined very casually in enumerations or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information.

          Control1..1
          This element is affected by the following invariants: ele-1
          BindingUnless not suitable, these codes SHALL be taken from ActEncounterCode
          (extensible to http://terminology.hl7.org/ValueSet/v3-ActEncounterCode)

          Classification of the encounter.

          TypeCoding
          Must Supporttrue
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          44. Encounter.classHistory
          Definition

          The class history permits the tracking of the encounters transitions without needing to go through the resource history. This would be used for a case where an admission starts of as an emergency encounter, then transitions into an inpatient scenario. Doing this and not restarting a new encounter ensures that any lab/diagnostic results can more easily follow the patient and not require re-processing and not get lost or cancelled during a kind of discharge from emergency to inpatient.

          ShortList of past encounter classes
          Control0..*
          This element is affected by the following invariants: ele-1
          TypeBackboneElement
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          46. Encounter.classHistory.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
          Typestring
          XML FormatIn the XML format, this property is represented as an attribute.
          48. Encounter.classHistory.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

          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..*
          This element is affected by the following invariants: ele-1
          TypeExtension
          Standard StatusNormative (from Trial Use)
          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 Encounter.classHistory.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 50. Encounter.classHistory.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. 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..*
            This element is affected by the following invariants: ele-1
            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())
            52. Encounter.classHistory.class
            Definition

            inpatient | outpatient | ambulatory | emergency +.

            Shortinpatient | outpatient | ambulatory | emergency +
            Comments

            Codes may be defined very casually in enumerations or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information.

            Control1..1
            This element is affected by the following invariants: ele-1
            BindingUnless not suitable, these codes SHALL be taken from ActEncounterCode
            (extensible to http://terminology.hl7.org/ValueSet/v3-ActEncounterCode)

            Classification of the encounter.

            TypeCoding
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            54. Encounter.classHistory.period
            Definition

            The time that the episode was in the specified class.

            ShortThe time that the episode was in the specified class
            Comments

            A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times").

            Period is not used for a duration (a measure of elapsed time). See Duration.

            Control1..1
            This element is affected by the following invariants: ele-1
            TypePeriod
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            per-1: If present, start SHALL have a lower value than end (start.hasValue().not() or end.hasValue().not() or (start <= end))
            56. Encounter.type
            Definition

            Specific type of encounter (e.g. e-mail consultation, surgical day-care, skilled nursing, rehabilitation).

            ShortSpecific type of encounter
            Comments

            Since there are many ways to further classify encounters, this element is 0..*.

            Control0..*
            This element is affected by the following invariants: ele-1
            BindingThe codes SHOULD be taken from UK Core Encounter Type
            (preferred to https://fhir.hl7.org.uk/ValueSet/UKCore-EncounterType)

            A code from the SNOMED Clinical Terminology UK coding system that describes an encounter between a care professional and the patient (or patient's record).

            TypeCodeableConcept
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            58. Encounter.serviceType
            Definition

            Broad categorization of the service that is to be provided (e.g. cardiology).

            ShortSpecific type of service
            Comments

            Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

            Control0..1
            This element is affected by the following invariants: ele-1
            BindingThe codes SHOULD be taken from UK Core Care Setting Type
            (preferred to https://fhir.hl7.org.uk/ValueSet/UKCore-CareSettingType)

            Any code from the SNOMED CT UK Refset with fully specified name 'Services simple reference set (foundation metadata concept)' with Refset Id 1127531000000102.

            TypeCodeableConcept
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            60. Encounter.priority
            Definition

            Indicates the urgency of the encounter.

            ShortIndicates the urgency of the encounter
            Comments

            Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

            Control0..1
            This element is affected by the following invariants: ele-1
            BindingFor example codes, see ActPriority
            (example to http://terminology.hl7.org/ValueSet/v3-ActPriority)

            Indicates the urgency of the encounter.

            TypeCodeableConcept
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            62. Encounter.subject
            Definition

            The patient or group present at the encounter.

            ShortThe patient or group present at the encounter
            Comments

            While the encounter is always about the patient, the patient might not actually be known in all contexts of use, and there may be a group of patients that could be anonymous (such as in a group therapy for Alcoholics Anonymous - where the recording of the encounter could be used for billing on the number of people/staff and not important to the context of the specific patients) or alternately in veterinary care a herd of sheep receiving treatment (where the animals are not individually tracked).

            Control0..1
            This element is affected by the following invariants: ele-1
            TypeReference(Patient, Group)
            Must Supporttrue
            Must Support TypesNo must-support rules about the choice of types/profiles
            Summarytrue
            Alternate Namespatient
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
            64. Encounter.episodeOfCare
            Definition

            Where a specific encounter should be classified as a part of a specific episode(s) of care this field should be used. This association can facilitate grouping of related encounters together for a specific purpose, such as government reporting, issue tracking, association via a common problem. The association is recorded on the encounter as these are typically created after the episode of care and grouped on entry rather than editing the episode of care to append another encounter to it (the episode of care could span years).

            ShortEpisode(s) of care that this encounter should be recorded against
            Comments

            References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

            Control0..*
            This element is affected by the following invariants: ele-1
            TypeReference(EpisodeOfCare)
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
            66. Encounter.basedOn
            Definition

            The request this encounter satisfies (e.g. incoming referral or procedure request).

            ShortThe ServiceRequest that initiated this encounter
            Comments

            References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

            Control0..*
            This element is affected by the following invariants: ele-1
            TypeReference(ServiceRequest)
            Alternate NamesincomingReferral
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
            68. Encounter.participant
            Definition

            The list of people responsible for providing the service.

            ShortList of participants involved in the encounter
            Control0..*
            This element is affected by the following invariants: ele-1
            TypeBackboneElement
            Must Supporttrue
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            70. Encounter.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
            Typestring
            XML FormatIn the XML format, this property is represented as an attribute.
            72. Encounter.participant.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            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..*
            This element is affected by the following invariants: ele-1
            TypeExtension
            Standard StatusNormative (from Trial Use)
            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 Encounter.participant.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 74. Encounter.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. 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..*
              This element is affected by the following invariants: ele-1
              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())
              76. Encounter.participant.type
              Definition

              Role of participant in encounter.

              ShortRole of participant in encounter
              Comments

              The participant type indicates how an individual participates in an encounter. It includes non-practitioner participants, and for practitioners this is to describe the action type in the context of this encounter (e.g. Admitting Dr, Attending Dr, Translator, Consulting Dr). This is different to the practitioner roles which are functional roles, derived from terms of employment, education, licensing, etc.

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

              Role of participant in encounter.

              TypeCodeableConcept
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              78. Encounter.participant.period
              Definition

              The period of time that the specified participant participated in the encounter. These can overlap or be sub-sets of the overall encounter's period.

              ShortPeriod of time during the encounter that the participant participated
              Comments

              A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times").

              Period is not used for a duration (a measure of elapsed time). See Duration.

              Control0..1
              This element is affected by the following invariants: ele-1
              TypePeriod
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              per-1: If present, start SHALL have a lower value than end (start.hasValue().not() or end.hasValue().not() or (start <= end))
              80. Encounter.participant.individual
              Definition

              Persons involved in the encounter other than the patient.

              ShortPersons involved in the encounter other than the patient
              Comments

              References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

              Control0..1
              This element is affected by the following invariants: ele-1
              TypeReference(Practitioner, PractitionerRole, RelatedPerson)
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
              82. Encounter.appointment
              Definition

              The appointment that scheduled this encounter.

              ShortThe appointment that scheduled this encounter
              Comments

              References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

              Control0..*
              This element is affected by the following invariants: ele-1
              TypeReference(Appointment)
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
              84. Encounter.period
              Definition

              The start and end time of the encounter.

              ShortThe start and end time of the encounter
              Comments

              If not (yet) known, the end of the Period may be omitted.

              Control0..1
              This element is affected by the following invariants: ele-1
              TypePeriod
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              per-1: If present, start SHALL have a lower value than end (start.hasValue().not() or end.hasValue().not() or (start <= end))
              86. Encounter.length
              Definition

              Quantity of time the encounter lasted. This excludes the time during leaves of absence.

              ShortQuantity of time the encounter lasted (less time absent)
              Comments

              May differ from the time the Encounter.period lasted because of leave of absence.

              Control0..1
              This element is affected by the following invariants: ele-1
              TypeDuration
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              qty-3: If a code for the unit is present, the system SHALL also be present (code.empty() or system.exists())
              drt-1: There SHALL be a code if there is a value and it SHALL be an expression of time. If system is present, it SHALL be UCUM. (code.exists() implies ((system = %ucum) and value.exists()))
              88. Encounter.reasonCode
              Definition

              Reason the encounter takes place, expressed as a code. For admissions, this can be used for a coded admission diagnosis.

              ShortCoded reason the encounter takes place
              Comments

              For systems that need to know which was the primary diagnosis, these will be marked with the standard extension primaryDiagnosis (which is a sequence value rather than a flag, 1 = primary diagnosis).

              Control0..*
              This element is affected by the following invariants: ele-1
              BindingThe codes SHOULD be taken from EncounterReasonCodes
              (preferred to http://hl7.org/fhir/ValueSet/encounter-reason)

              Reason why the encounter takes place.

              TypeCodeableConcept
              Must Supporttrue
              Summarytrue
              Alternate NamesIndication, Admission diagnosis
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              90. Encounter.reasonReference
              Definition

              Reason the encounter takes place, expressed as a code. For admissions, this can be used for a coded admission diagnosis.

              ShortReason the encounter takes place (reference)
              Comments

              For systems that need to know which was the primary diagnosis, these will be marked with the standard extension primaryDiagnosis (which is a sequence value rather than a flag, 1 = primary diagnosis).

              Control0..*
              This element is affected by the following invariants: ele-1
              TypeReference(Condition, Procedure, Observation, ImmunizationRecommendation)
              Must Supporttrue
              Must Support TypesNo must-support rules about the choice of types/profiles
              Summarytrue
              Alternate NamesIndication, Admission diagnosis
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
              92. Encounter.diagnosis
              Definition

              The list of diagnosis relevant to this encounter.

              ShortThe list of diagnosis relevant to this encounter
              Control0..*
              This element is affected by the following invariants: ele-1
              TypeBackboneElement
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              94. Encounter.diagnosis.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
              Typestring
              XML FormatIn the XML format, this property is represented as an attribute.
              96. Encounter.diagnosis.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

              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..*
              This element is affected by the following invariants: ele-1
              TypeExtension
              Standard StatusNormative (from Trial Use)
              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 Encounter.diagnosis.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ url
              • 98. Encounter.diagnosis.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. 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..*
                This element is affected by the following invariants: ele-1
                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())
                100. Encounter.diagnosis.condition
                Definition

                Reason the encounter takes place, as specified using information from another resource. For admissions, this is the admission diagnosis. The indication will typically be a Condition (with other resources referenced in the evidence.detail), or a Procedure.

                ShortThe diagnosis or procedure relevant to the encounter
                Comments

                For systems that need to know which was the primary diagnosis, these will be marked with the standard extension primaryDiagnosis (which is a sequence value rather than a flag, 1 = primary diagnosis).

                Control1..1
                This element is affected by the following invariants: ele-1
                TypeReference(Condition, Procedure)
                Summarytrue
                Alternate NamesAdmission diagnosis, discharge diagnosis, indication
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                102. Encounter.diagnosis.use
                Definition

                Role that this diagnosis has within the encounter (e.g. admission, billing, discharge …).

                ShortRole that this diagnosis has within the encounter (e.g. admission, billing, discharge …)
                Comments

                Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

                Control0..1
                This element is affected by the following invariants: ele-1
                BindingThe codes SHOULD be taken from DiagnosisRole
                (preferred to http://hl7.org/fhir/ValueSet/diagnosis-role)

                The type of diagnosis this condition represents.

                TypeCodeableConcept
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                104. Encounter.diagnosis.rank
                Definition

                Ranking of the diagnosis (for each role type).

                ShortRanking of the diagnosis (for each role type)
                Comments

                32 bit number; for values larger than this, use decimal

                Control0..1
                This element is affected by the following invariants: ele-1
                TypepositiveInt
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                106. Encounter.account
                Definition

                The set of accounts that may be used for billing for this Encounter.

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

                The billing system may choose to allocate billable items associated with the Encounter to different referenced Accounts based on internal business rules.

                Control0..*
                This element is affected by the following invariants: ele-1
                TypeReference(Account)
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                108. Encounter.hospitalization
                Definition

                Details about the admission to a healthcare service.

                ShortDetails about the admission to a healthcare service
                Comments

                An Encounter may cover more than just the inpatient stay. Contexts such as outpatients, community clinics, and aged care facilities are also included.

                The duration recorded in the period of this encounter covers the entire scope of this hospitalization record.

                Control0..1
                This element is affected by the following invariants: ele-1
                TypeBackboneElement
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                110. Encounter.hospitalization.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
                Typestring
                XML FormatIn the XML format, this property is represented as an attribute.
                112. Encounter.hospitalization.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                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..*
                This element is affected by the following invariants: ele-1
                TypeExtension
                Standard StatusNormative (from Trial Use)
                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 Encounter.hospitalization.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                • value @ url
                • 114. Encounter.hospitalization.extension:admissionMethod
                  Slice NameadmissionMethod
                  Definition

                  This extension has been developed to demonstrate the representation of the method by which a patient was admitted to hospital.

                  ShortAn extension to support the method by which an individual was admitted into hospital.
                  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..1
                  This element is affected by the following invariants: ele-1
                  TypeExtension(Extension UK Core Admission Method) (Extension Type: CodeableConcept)
                  Is Modifierfalse
                  Standard StatusNormative (from Trial Use)
                  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())
                  116. Encounter.hospitalization.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. 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..*
                  This element is affected by the following invariants: ele-1
                  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. Encounter.hospitalization.preAdmissionIdentifier
                  Definition

                  Pre-admission identifier.

                  ShortPre-admission identifier
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeIdentifier
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  120. Encounter.hospitalization.origin
                  Definition

                  The location/organization from which the patient came before admission.

                  ShortThe location/organization from which the patient came before admission
                  Comments

                  References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeReference(Location, Organization)
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                  122. Encounter.hospitalization.admitSource
                  Definition

                  From where patient was admitted (physician referral, transfer).

                  ShortFrom where patient was admitted (physician referral, transfer)
                  Comments

                  Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

                  Control0..1
                  This element is affected by the following invariants: ele-1
                  BindingThe codes SHOULD be taken from UK Core Source Of Admission
                  (preferred to https://fhir.hl7.org.uk/ValueSet/UKCore-SourceOfAdmission)

                  The source of admission to a Hospital Provider Spell or a Nursing Episode when the Patient is in a Hospital Site or a Care Home.

                  TypeCodeableConcept
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  124. Encounter.hospitalization.reAdmission
                  Definition

                  Whether this hospitalization is a readmission and why if known.

                  ShortThe type of hospital re-admission that has occurred (if any). If the value is absent, then this is not identified as a readmission
                  Comments

                  Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

                  Control0..1
                  This element is affected by the following invariants: ele-1
                  BindingFor example codes, see hl7VS-re-admissionIndicator
                  (example to http://terminology.hl7.org/ValueSet/v2-0092)

                  The reason for re-admission of this hospitalization encounter.

                  TypeCodeableConcept
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  126. Encounter.hospitalization.dietPreference
                  Definition

                  Diet preferences reported by the patient.

                  ShortDiet preferences reported by the patient
                  Comments

                  For example, a patient may request both a dairy-free and nut-free diet preference (not mutually exclusive).

                  Control0..*
                  This element is affected by the following invariants: ele-1
                  BindingFor example codes, see Diet
                  (example to http://hl7.org/fhir/ValueSet/encounter-diet)

                  Medical, cultural or ethical food preferences to help with catering requirements.

                  TypeCodeableConcept
                  Requirements

                  Used to track patient's diet restrictions and/or preference. For a complete description of the nutrition needs of a patient during their stay, one should use the nutritionOrder resource which links to Encounter.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  128. Encounter.hospitalization.specialCourtesy
                  Definition

                  Special courtesies (VIP, board member).

                  ShortSpecial courtesies (VIP, board member)
                  Comments

                  Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

                  Control0..*
                  This element is affected by the following invariants: ele-1
                  BindingThe codes SHOULD be taken from SpecialCourtesy
                  (preferred to http://hl7.org/fhir/ValueSet/encounter-special-courtesy)

                  Special courtesies.

                  TypeCodeableConcept
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  130. Encounter.hospitalization.specialArrangement
                  Definition

                  Any special requests that have been made for this hospitalization encounter, such as the provision of specific equipment or other things.

                  ShortWheelchair, translator, stretcher, etc.
                  Comments

                  Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

                  Control0..*
                  This element is affected by the following invariants: ele-1
                  BindingThe codes SHOULD be taken from SpecialArrangements
                  (preferred to http://hl7.org/fhir/ValueSet/encounter-special-arrangements)

                  Special arrangements.

                  TypeCodeableConcept
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  132. Encounter.hospitalization.destination
                  Definition

                  Location/organization to which the patient is discharged.

                  ShortLocation/organization to which the patient is discharged
                  Comments

                  References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

                  Control0..1
                  This element is affected by the following invariants: ele-1
                  TypeReference(Location, Organization)
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                  134. Encounter.hospitalization.dischargeDisposition
                  Definition

                  Category or kind of location after discharge.

                  ShortCategory or kind of location after discharge
                  Comments

                  Not all terminology uses fit this general pattern. In some cases, models should not use CodeableConcept and use Coding directly and provide their own structure for managing text, codings, translations and the relationship between elements and pre- and post-coordination.

                  Control0..1
                  This element is affected by the following invariants: ele-1
                  BindingThe codes SHOULD be taken from UK Core Discharge Destination
                  (preferred to https://fhir.hl7.org.uk/ValueSet/UKCore-DischargeDestination)

                  The destination of a Patient on completion of a Hospital Provider Spell, or a note that the Patient died or was a still birth.

                  TypeCodeableConcept
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  136. Encounter.location
                  Definition

                  List of locations where the patient has been during this encounter.

                  ShortList of locations where the patient has been
                  Comments

                  Virtual encounters can be recorded in the Encounter by specifying a location reference to a location of type "kind" such as "client's home" and an encounter.class = "virtual".

                  Control0..*
                  This element is affected by the following invariants: ele-1
                  TypeBackboneElement
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  138. Encounter.location.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
                  Typestring
                  XML FormatIn the XML format, this property is represented as an attribute.
                  140. Encounter.location.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                  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..*
                  This element is affected by the following invariants: ele-1
                  TypeExtension
                  Standard StatusNormative (from Trial Use)
                  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 Encounter.location.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                  • value @ url
                  • 142. Encounter.location.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. 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..*
                    This element is affected by the following invariants: ele-1
                    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())
                    144. Encounter.location.location
                    Definition

                    The location where the encounter takes place.

                    ShortLocation the encounter takes place
                    Comments

                    References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

                    Control1..1
                    This element is affected by the following invariants: ele-1
                    TypeReference(Location)
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                    146. Encounter.location.status
                    Definition

                    The status of the participants' presence at the specified location during the period specified. If the participant is no longer at the location, then the period will have an end date/time.

                    Shortplanned | active | reserved | completed
                    Comments

                    When the patient is no longer active at a location, then the period end date is entered, and the status may be changed to completed.

                    Control0..1
                    This element is affected by the following invariants: ele-1
                    BindingThe codes SHALL be taken from EncounterLocationStatus
                    (required to http://hl7.org/fhir/ValueSet/encounter-location-status|4.0.1)

                    The status of the location.

                    Typecode
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    148. Encounter.location.physicalType
                    Definition

                    This will be used to specify the required levels (bed/ward/room/etc.) desired to be recorded to simplify either messaging or query.

                    ShortThe physical type of the location (usually the level in the location hierachy - bed room ward etc.)
                    Comments

                    This information is de-normalized from the Location resource to support the easier understanding of the encounter resource and processing in messaging or query.

                    There may be many levels in the hierachy, and this may only pic specific levels that are required for a specific usage scenario.

                    Control0..1
                    This element is affected by the following invariants: ele-1
                    BindingThe codes SHOULD be taken from UK Core Encounter Location Type
                    (preferred to https://fhir.hl7.org.uk/ValueSet/UKCore-EncounterLocationType)

                    A set of codes that define the physical type of location where an encounter takes place.

                    TypeCodeableConcept
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    150. Encounter.location.period
                    Definition

                    Time period during which the patient was present at the location.

                    ShortTime period during which the patient was present at the location
                    Comments

                    A Period specifies a range of time; the context of use will specify whether the entire range applies (e.g. "the patient was an inpatient of the hospital for this time range") or one value from the range applies (e.g. "give to the patient between these two times").

                    Period is not used for a duration (a measure of elapsed time). See Duration.

                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypePeriod
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    per-1: If present, start SHALL have a lower value than end (start.hasValue().not() or end.hasValue().not() or (start <= end))
                    152. Encounter.serviceProvider
                    Definition

                    The organization that is primarily responsible for this Encounter's services. This MAY be the same as the organization on the Patient record, however it could be different, such as if the actor performing the services was from an external organization (which may be billed seperately) for an external consultation. Refer to the example bundle showing an abbreviated set of Encounters for a colonoscopy.

                    ShortThe organization (facility) responsible for this encounter
                    Comments

                    References SHALL be a reference to an actual FHIR resource, and SHALL be resolveable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository.

                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypeReference(Organization)
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))
                    154. Encounter.partOf
                    Definition

                    Another Encounter of which this encounter is a part of (administratively or in time).

                    ShortAnother Encounter this encounter is part of
                    Comments

                    This is also used for associating a child's encounter back to the mother's encounter.

                    Refer to the Notes section in the Patient resource for further details.

                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypeReference(Encounter)
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ref-1: SHALL have a contained resource if a local reference is provided (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')))