US Public Health Profiles Library
2.0.0 - STU 2 United States of America flag

US Public Health Profiles Library, published by HL7 International / Public Health. This guide is not an authorized publication; it is the continuous build for version 2.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-us-ph-library/ and changes regularly. See the Directory of published versions

Resource Profile: US Public Health Composition - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 3

Definitions for the us-ph-composition resource profile

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

0. Composition
Definition

A set of healthcare-related information that is assembled together into a single logical package that provides a single coherent statement of meaning, establishes its own context and that has clinical attestation with regard to who is making the statement. A Composition defines the structure and narrative content necessary for a document. However, a Composition alone does not constitute a document. Rather, the Composition must be the first entry in a Bundle where Bundle.type=document, and any other resources referenced from Composition must be included as subsequent entries in the Bundle (for example Patient, Practitioner, Encounter, etc.).

ShortUS Public Health CompositionA set of resources composed into a single coherent clinical statement with clinical attestation
Comments

While the focus of this specification is on patient-specific clinical statements, this resource can also apply to other healthcare-related statements such as study protocol designs, healthcare invoices and other activities that are not necessarily patient-specific or clinical.

Control0..*
Is Modifierfalse
Summaryfalse
Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
clindoc-limit-participantType: The R4 FHIR Clinical Document Composition Profile contains specific extensions for data entry person, informant, information recipient, primary information recipient and tracker. So, they are not allowed in the participant extension in the R4 profile. In R6, the intention is to have dedicated-named slices of a backbone element. (extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='ENT').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='INF').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='IRCP').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='PRCP').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='TRC').not())
2. Composition.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
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. Composition.language
Definition

The base language in which the resource is written.

ShortLanguage of the resource content
Comments

Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

Control0..1
BindingThe codes SHOULD be taken from CommonLanguageshttp://hl7.org/fhir/ValueSet/languages|4.0.1
(preferred to http://hl7.org/fhir/ValueSet/languages|4.0.1)

A human language.

Additional BindingsPurpose
AllLanguagesMax Binding
Typecode
Is Modifierfalse
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supporttrue
Summaryfalse
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
6. Composition.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
TypeNarrative
Is Modifierfalse
Must Supporttrue
Summaryfalse
Alternate Namesnarrative, html, xhtml, display
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
8. Composition.extension
Definition

An Extension


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

ShortExtensionAdditional content defined by implementations
Comments

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Control10..*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
SlicingThis element introduces a set of slices on Composition.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 10. Composition.extension:R5-Composition-version
    Slice NameR5-Composition-version
    Definition

    Public Health Composition versionNumber. This is equivalent to ClinicalDocument.versionNumber in CDA. The identifier of the containing Bundle is equivalent to ClinicalDocument.id in CDA and Composition.identifier is equivalent to ClinicalDocument.setId in CDA. This is a version specific identifier for the composition, assigned when each version is created/updated.

    While each resource, including the composition itself, has its own version identifier, this is a formal identifier for the logical version of the composition as a whole. It would remain constant if the resources were moved to a new server, and all got new individual resource versions, for example.

    ShortPublic Health Composition versionNumber
    Control1..1
    This element is affected by the following invariants: ele-1
    TypeExtension(Extension Definition for Composition.version for Version 5.0) (Extension Type: string)
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Labelclinical document version number
    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. Composition.extension:data-enterer
    Slice Namedata-enterer
    Definition

    The Data Enterer Extension represents the person who transferred the content, written or dictated, into the clinical document. To clarify, an author provides the content, subject to their own interpretation; a dataEnterer adds an author's information to the electronic system.

    ShortA Data Enterer represents the person who transferred the content, written or dictated, into the clinical document. To clarify, an author provides the content, subject to their own interpretation; a dataEnterer adds an author's information to the electronic system.
    Control0..1
    This element is affected by the following invariants: ele-1
    TypeExtension(Data Enterer Extension) (Complex Extension)
    Is Modifierfalse
    Must Supporttrue
    Labeldate enterer
    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())
    14. Composition.extension:informant
    Slice Nameinformant
    Definition

    Informant Extension describes an information source for any content within the clinical document. This informant is constrained for use when the source of information is an assigned health care provider for the patient.

    ShortAn Informant is an information source for any content within the clinical document. This informant is constrained for use when the source of information is an assigned health care provider for the patient.
    Control0..*
    This element is affected by the following invariants: ele-1
    TypeExtension(Informant Extension) (Complex Extension)
    Is Modifierfalse
    Must Supporttrue
    Labelinformant
    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())
    16. Composition.extension:information-recipient
    Slice Nameinformation-recipient
    Definition

    The Information Recipient Extension records the intended recipient of the information at the time the document was created.

    ShortAn Information Recipient is the intended recipient of the information at the time the document was created.
    Control0..*
    This element is affected by the following invariants: ele-1
    TypeExtension(Information Recipient Extension) (Complex Extension)
    Is Modifierfalse
    Must Supporttrue
    Labelinformation recipient of type primary, secondary information recipient or a generic information recipient
    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. Composition.extension:participant
    Slice Nameparticipant
    Definition

    Participant Extension identifies supporting entities, including parents, relatives, caregivers, insurance policyholders, guarantors, and others related in some way to the patient. A supporting person or organization is an individual or an organization with a relationship to the patient. A supporting person who is playing multiple roles would be recorded in multiple participants (e.g., emergency contact and next-of-kin).

    ShortA Participant that is not a data-enter, information-recipient nor an informant
    Control0..*
    This element is affected by the following invariants: ele-1
    TypeExtension(Participant Extension) (Complex Extension)
    Is Modifierfalse
    Must Supporttrue
    LabelA Participant that is not a data-enter, information-recipient nor an informant
    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. Composition.extension:consent
    Slice Nameconsent
    Definition

    Consent Extension refers to a FHIR Consent instance that indicates a patient's consent

    Shortconsent
    Control0..*
    This element is affected by the following invariants: ele-1
    TypeExtension(Consent Extension) (Extension Type: Reference)
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    Labelconsent
    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())
    22. Composition.extension:basedOn
    Slice NamebasedOn
    Definition

    A plan, proposal or order that is fulfilled in whole or in part by this event.

    ShortThe clinical action, such as a plan, proposal or order that is fulfilled by or precipitated this FHIR Clinical Document, such as a radiologists report of an x-ray.
    Control0..*
    TypeExtension(Based on) (Extension Type: Reference(Resource))
    Is Modifierfalse
    Must Supporttrue
    Summaryfalse
    LabelbasedOn, e.g. order fullfilled
    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())
    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
    24. Composition.extension:change-made
    Slice Namechange-made
    Definition

    Change Made provides an annotation of a change that has been made to the Composition or Composition section. The extension is experimental and may overlap with other extensions, such as use of note in R6. The extension contains two parts: change - the description of the change, version-changed - the FHIR Clinical Document version that was changed. Note: Calculating a differential between versions is suggested for safely finding all changes as this annotation may not contain all changes between versions.

    ShortNote of changes made, calculating changes maybe required for safety as this extension may not contain all changes. Experimental, may overlap with other elements such as FHIR R6 note.
    Control0..1
    This element is affected by the following invariants: ele-1
    TypeExtension(Change Made) (Complex Extension)
    Is Modifierfalse
    Must Supporttrue
    LabelNote of changes made, calculating changes maybe required for safety as this extension may not contain all changes. Experimental, may overlap with other elements such as FHIR R6 note.
    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())
    26. Composition.modifierExtension
    Definition

    An Extension


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

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

    ShortExtensionExtensions that cannot be ignored
    Comments

    There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

    Control0..*
    TypeExtension
    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
    Summaryfalse
    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 Composition.modifierExtension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ url
    • 28. Composition.modifierExtension:R5-Composition-status
      Slice NameR5-Composition-status
      Definition

      An Extension

      ShortThis allows for additional status values found in R5. However, exercise caution as the R4 Composition.status is required.
      Control0..1
      This element is affected by the following invariants: ele-1
      TypeExtension(Extension Definition for Composition.status for Version 5.0) (Extension Type: Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta)
      Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status values such as cancelled (which means that the resource should not be treated as valid).
      Must Supporttrue
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
      30. Composition.identifier
      Definition

      Public Health Composition identifier. This is equivalent to ClinicalDocument.setId in CDA. The identifier of the containing Bundle is equivalent to ClinicalDocument.id in CDA and Composition.extensionVersionNumber is equivalent to ClinicalDocument.versionNumber in CDA.


      A version-independent identifier for the Composition. This identifier stays constant as the composition is changed over time.

      ShortPublic Health Composition identifierVersion-independent identifier for the Composition
      Comments

      Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate.

      NoteThis is a business identifier, not a resource identifier (see discussion)
      Control10..1
      TypeIdentifier
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      32. Composition.status
      Definition

      The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document.

      Shortpreliminary | final | amended | entered-in-error
      Comments

      If a composition is marked as withdrawn, the compositions/documents in the series, or data from the composition or document series, should never be displayed to a user without being clearly marked as untrustworthy. The flag "entered-in-error" is why this element is labeled as a modifier of other elements.

      Some reporting work flows require that the original narrative of a final document never be altered; instead, only new narrative can be added. The composition resource has no explicit status for explicitly noting whether this business rule is in effect. This would be handled by an extension if required.

      Control1..1
      BindingThe codes SHALL be taken from CompositionStatushttp://hl7.org/fhir/ValueSet/composition-status|4.0.1
      (required to http://hl7.org/fhir/ValueSet/composition-status|4.0.1)

      The workflow/clinical status of the composition.

      Typecode
      Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Must Supporttrue
      Summarytrue
      Requirements

      Need to be able to mark interim, amended, or withdrawn compositions or documents.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      34. Composition.type
      Definition

      Specifies the particular kind of composition (e.g. History and Physical, Discharge Summary, Progress Note). This usually equates to the purpose of making the composition.

      ShortType of this public health reportKind of composition (LOINC if possible)
      Comments

      For Composition type, LOINC is ubiquitous and strongly endorsed by HL7. Most implementation guides will require a specific LOINC code, or use LOINC as an extensible binding.

      Control1..1
      BindingThe codes SHOULD be taken from FHIRDocumentTypeCodeshttp://hl7.org/fhir/ValueSet/doc-typecodes|4.0.1
      (preferred to http://hl7.org/fhir/ValueSet/doc-typecodes|4.0.1)

      Type of a composition.

      TypeCodeableConcept
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Requirements

      Key metadata element describing the composition, used in searching/filtering.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      36. Composition.category
      Definition

      A categorization for the type of the composition - helps for indexing and searching. This may be implied by or derived from the code specified in the Composition Type.

      ShortCategorization of Composition
      Comments

      This is a metadata field from XDS/MHD.

      Control10..*
      BindingFor example codes, see DocumentClassValueSethttp://hl7.org/fhir/ValueSet/document-classcodes|4.0.1
      (example to http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1)

      High-level kind of a clinical document at a macro level.

      TypeCodeableConcept
      Is Modifierfalse
      Must Supporttrue
      Summarytrue
      Requirements

      Helps humans to assess whether the composition is of interest when viewing an index of compositions or documents.

      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      SlicingThis element introduces a set of slices on Composition.category. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ $this
      • 38. Composition.category:clinicalnotecategory
        Slice Nameclinicalnotecategory
        Definition

        A categorization for the type of the composition - helps for indexing and searching. This may be implied by or derived from the code specified in the Composition Type.

        ShortCategory for Clinical NoteCategorization of Composition
        Comments

        This is a metadata field from XDS/MHD.

        Control10..1*
        BindingFor example codes, see DocumentClassValueSethttp://hl7.org/fhir/ValueSet/document-classcodes|4.0.1
        (example to http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1)

        High-level kind of a clinical document at a macro level.

        TypeCodeableConcept
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Requirements

        Helps humans to assess whether the composition is of interest when viewing an index of compositions or documents.

        Pattern Value{
          "coding" : [{
            "system" : "http://loinc.org",
            "code" : "107903-7",
            "display" : "Clinical note"
          }]
        }
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        40. Composition.subject
        Definition

        The subject of this Composition is the patient.


        Who or what the composition is about. The composition can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of livestock, or a set of patients that share a common exposure).

        ShortPatientWho and/or what the composition is about
        Comments

        For clinical documents, this is usually the patient.

        Control10..1
        TypeReference(US Public Health Patient, US Core Patient Profile, Resource)
        Is Modifierfalse
        Must Supporttrue
        Must Support TypesNo must-support rules about the choice of types/profiles
        Summarytrue
        Requirements

        Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        42. Composition.encounter
        Definition

        This Encounter profile represents the encounter related to the public health event.


        Describes the clinical encounter or type of care this documentation is associated with.

        ShortEncounter related to the public health eventContext of the Composition
        Control10..1
        TypeReference(US Public Health Encounter, Encounter)
        Is Modifierfalse
        Must Supporttrue
        Summarytrue
        Requirements

        Provides context for the composition and supports searching.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        44. Composition.date
        Definition

        The composition editing time, when the composition was last logically changed by the author.

        Short(USCDI+) Date of the ReportComposition editing time
        Comments

        The Last Modified Date on the composition may be after the date of the document was attested without being changed.

        Control1..1
        TypedateTime
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Requirements

        dateTime is used for tracking, organizing versions and searching. Note that this is the time of authoring. When packaged in a document, Bundle.timestamp is the date of packaging.


        dateTime is used for tracking, organizing versions and searching. Note that this is the time of authoring. When packaged in a document, Bundle.timestamp is the date of packaging.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        46. Composition.author
        Definition

        It is possible to have multiple authors - especially in the case where the default author is the organization. For public health reporting this could contain the contact details for the Infection Control Professional (ICP) specific to the condition being reported on. If the main author of the document is not a person, it is recommended to have an additional person author contact who is specific for a disease for follow-up requirements. This person could be the ICP. Where a trigger occurs outside of an encounter the author will represent the Provider and Facility for reporting purposes.


        Identifies who is responsible for the information in the composition, not necessarily who typed it in.

        ShortThe author(s) of the documentWho and/or what authored the composition
        Control1..*
        TypeReference(US Public Health PractitionerRole, US Core Practitioner Profile, US Public Health Organization, Device, Practitioner, PractitionerRole, Device, Patient, RelatedPerson, Organization)
        Is Modifierfalse
        Must Supporttrue
        Must Support TypesNo must-support rules about the choice of types/profiles
        Summarytrue
        Requirements

        Identifies who is responsible for the content.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        48. Composition.title
        Definition

        Official human-readable label for the composition.

        ShortHuman Readable name/title
        Comments

        For many compositions, the title is the same as the text or a display name of Composition.type (e.g. a "consultation" or "progress note"). Note that CDA does not make title mandatory, but there are no known cases where it is useful for title to be omitted, so it is mandatory here. Feedback on this requirement is welcome during the trial use period.

        Control1..1
        Typestring
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Must Supporttrue
        Summarytrue
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        50. Composition.attester
        Definition

        A participant who has attested to the accuracy of the composition/document.

        ShortAttests to accuracy of composition
        Comments

        Only list each attester once.

        Control0..*
        TypeBackboneElement
        Is Modifierfalse
        Must Supporttrue
        Summaryfalse
        Requirements

        Identifies responsibility for the accuracy of the composition content.

        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        SlicingThis element introduces a set of slices on Composition.attester. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ mode
        • 52. Composition.attester.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..*
          TypeExtension
          Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
          Summarytrue
          Requirements

          Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

          Alternate Namesextensions, user content, modifiers
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
          54. Composition.attester.mode
          Definition

          The type of attestation the authenticator offers.

          Shortpersonal | professional | legal | official
          Control1..1
          BindingThe codes SHALL be taken from CompositionAttestationModehttp://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1
          (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

          The way in which a person authenticated a composition.

          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summaryfalse
          Requirements

          Indicates the level of authority of the attestation.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          56. Composition.attester.time
          Definition

          When the composition was attested by the party.

          ShortWhen the composition was attested
          Control0..1
          TypedateTime
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supporttrue
          Summaryfalse
          Requirements

          Identifies when the information in the composition was deemed accurate. (Things may have changed since then.).

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          58. Composition.attester.party
          Definition

          Who attested the composition in the specified way.

          ShortWho attested the composition
          Control0..1
          TypeReference(Patient, RelatedPerson, Practitioner, PractitionerRole, Organization)
          Is Modifierfalse
          Must Supporttrue
          Must Support TypesNo must-support rules about the choice of types/profiles
          Summaryfalse
          Requirements

          Identifies who has taken on the responsibility for accuracy of the composition content.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          60. Composition.attester:legal_attester
          Slice Namelegal_attester
          Definition

          A participant who has attested to the accuracy of the composition/document.

          Shortaka legal authenticatorAttests to accuracy of composition
          Comments

          Only list each attester once.

          Control0..1*
          TypeBackboneElement
          Is Modifierfalse
          Must Supporttrue
          Summaryfalse
          Requirements

          Identifies responsibility for the accuracy of the composition content.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          62. Composition.attester:legal_attester.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..*
          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())
          64. Composition.attester:legal_attester.mode
          Definition

          The type of attestation the authenticator offers.

          Shortpersonal | professional | legal | official
          Control1..1
          BindingThe codes SHALL be taken from CompositionAttestationModehttp://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1
          (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

          The way in which a person authenticated a composition.

          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summaryfalse
          Requirements

          Indicates the level of authority of the attestation.

          Pattern Valuelegal
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          66. Composition.attester:professional_attester
          Slice Nameprofessional_attester
          Definition

          A participant who has attested to the accuracy of the composition/document.

          Shortaka authenticatorAttests to accuracy of composition
          Comments

          Only list each attester once.

          Control0..*
          TypeBackboneElement
          Is Modifierfalse
          Must Supporttrue
          Summaryfalse
          Requirements

          Identifies responsibility for the accuracy of the composition content.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          68. Composition.attester:professional_attester.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..*
          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())
          70. Composition.attester:professional_attester.mode
          Definition

          The type of attestation the authenticator offers.

          Shortpersonal | professional | legal | official
          Control1..1
          BindingThe codes SHALL be taken from CompositionAttestationModehttp://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1
          (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

          The way in which a person authenticated a composition.

          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Summaryfalse
          Requirements

          Indicates the level of authority of the attestation.

          Pattern Valueprofessional
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          72. Composition.custodian
          Definition

          Identifies the organization or group who is responsible for ongoing maintenance of and access to the composition/document information.

          ShortCustodian Organization Address, Custodian Organization Id, Custodian Organization Name, Custodian Organization Telecom (contained in referenced US Public Health Organization)Organization which maintains the composition
          Comments

          This is useful when documents are derived from a composition - provides guidance for how to get the latest version of the document. This is optional because this is sometimes not known by the authoring system, and can be inferred by context. However, it is important that this information be known when working with a derived document, so providing a custodian is encouraged.

          Control0..1
          TypeReference(US Public Health Organization, Organization)
          Is Modifierfalse
          Must Supporttrue
          Summarytrue
          Requirements

          Identifies where to go to find the current version, where to report issues, etc.

          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          74. Composition.relatesTo
          Definition

          Relationships that this composition has with other compositions or documents that already exist.

          ShortRelationships to other compositions/documents
          Comments

          A document is a version specific composition.

          Control0..*
          TypeBackboneElement
          Is Modifierfalse
          Must Supporttrue
          Summaryfalse
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          SlicingThis element introduces a set of slices on Composition.relatesTo. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ code
          • type @ target
          • 76. Composition.relatesTo.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..*
            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())
            78. Composition.relatesTo.code
            Definition

            The type of relationship that this composition has with anther composition or document.

            Shortreplaces | transforms | signs | appends
            Comments

            If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

            Control1..1
            BindingThe codes SHALL be taken from DocumentRelationshipTypehttp://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1
            (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

            The type of relationship between documents.

            Typecode
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            80. Composition.relatesTo.target[x]
            Definition

            The target composition/document of this relationship.

            ShortTarget of the relationship
            Control1..1
            TypeChoice of: Identifier, Reference(Composition)
            [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • type @ $this
            • 82. Composition.relatesTo.target[x]:targetIdentifier
              Slice NametargetIdentifier
              Definition

              The target composition/document of this relationship.

              ShortReference to the Bundle.identifier of the FHIR Clinical Document being appended, or to some other identifier of a non FHIR documentTarget of the relationship
              Control01..1
              TypeIdentifier, Reference(Composition)
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              84. Composition.relatesTo:replaced_document
              Slice Namereplaced_document
              Definition

              Document or Composition that this Composition replaces


              Relationships that this composition has with other compositions or documents that already exist.

              ShortDocument or Composition that this Composition replacesRelationships to other compositions/documents
              Comments

              A document is a version specific composition.

              Control0..*
              TypeBackboneElement
              Is Modifierfalse
              Must Supporttrue
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              86. Composition.relatesTo:replaced_document.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..*
              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())
              88. Composition.relatesTo:replaced_document.code
              Definition

              The type of relationship that this composition has with anther composition or document.

              Shortreplaces | transforms | signs | appends
              Comments

              If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

              Control1..1
              BindingThe codes SHALL be taken from DocumentRelationshipTypehttp://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1
              (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

              The type of relationship between documents.

              Typecode
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summaryfalse
              Pattern Valuereplaces
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              90. Composition.relatesTo:replaced_document.target[x]
              Definition

              Identifier/Reference to the Document or Composition replaced


              The target composition/document of this relationship.

              ShortIdentifier/Reference to the Document or Composition replacedTarget of the relationship
              Control1..1
              TypeIdentifier, Reference(Composition)
              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
              • type @ $this
              • 92. Composition.relatesTo:replaced_document.target[x]:targetIdentifier
                Slice NametargetIdentifier
                Definition

                The target composition/document of this relationship.

                ShortReference to the Bundle.identifier of the FHIR Clinical Document being replaced, or to some other identifier of a non FHIR documentTarget of the relationship
                Control1..1
                TypeIdentifier, Reference(Composition)
                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                94. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.use
                Definition

                The purpose of this identifier.

                Shortusual | official | temp | secondary | old (If known)
                Comments

                Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

                Control0..1
                BindingThe codes SHALL be taken from IdentifierUsehttp://hl7.org/fhir/ValueSet/identifier-use|4.0.1
                (required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

                Identifies the purpose for this identifier, if known .

                Typecode
                Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Requirements

                Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                96. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.system
                Definition

                Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

                ShortThe namespace for the identifier value
                Comments

                Identifier.system is always case sensitive.

                Control10..1
                Typeuri
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                Requirements

                There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

                ExampleGeneral: http://www.acme.com/identifiers/patient
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                98. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.value
                Definition

                The portion of the identifier typically relevant to the user and which is unique within the context of the system.

                ShortThe value that is unique
                Comments

                If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

                Control10..1
                Typestring
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summarytrue
                ExampleGeneral: 123456
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                100. Composition.relatesTo:appended_document
                Slice Nameappended_document
                Definition

                Relationships that this composition has with other compositions or documents that already exist.

                ShortThe document(s) being appended tooRelationships to other compositions/documents
                Comments

                A document is a version specific composition.

                Control0..*
                TypeBackboneElement
                Is Modifierfalse
                Must Supporttrue
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                102. Composition.relatesTo:appended_document.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..*
                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())
                104. Composition.relatesTo:appended_document.code
                Definition

                The type of relationship that this composition has with anther composition or document.

                Shortreplaces | transforms | signs | appends
                Comments

                If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

                Control1..1
                BindingThe codes SHALL be taken from DocumentRelationshipTypehttp://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1
                (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

                The type of relationship between documents.

                Typecode
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Summaryfalse
                Pattern Valueappends
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                106. Composition.relatesTo:appended_document.target[x]
                Definition

                The target composition/document of this relationship.

                ShortTarget of the relationship
                Control1..1
                TypeIdentifier, Reference(Composition)
                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
                • type @ $this
                • 108. Composition.relatesTo:appended_document.target[x]:targetIdentifier
                  Slice NametargetIdentifier
                  Definition

                  The target composition/document of this relationship.

                  ShortTarget of the relationship
                  Control1..1
                  TypeIdentifier, Reference(Composition)
                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  110. Composition.relatesTo:appended_document.target[x]:targetIdentifier.use
                  Definition

                  The purpose of this identifier.

                  Shortusual | official | temp | secondary | old (If known)
                  Comments

                  Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

                  Control10..1
                  BindingThe codes SHALL be taken from IdentifierUsehttp://hl7.org/fhir/ValueSet/identifier-use|4.0.1
                  (required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

                  Identifies the purpose for this identifier, if known .

                  Typecode
                  Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summarytrue
                  Requirements

                  Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  112. Composition.relatesTo:transformed
                  Slice Nametransformed
                  Definition

                  Document of Composition that this Composition is transformed from


                  Relationships that this composition has with other compositions or documents that already exist.

                  ShortDocument or Composition that this Composition is transformed fromRelationships to other compositions/documents
                  Comments

                  A document is a version specific composition.

                  Control0..1*
                  TypeBackboneElement
                  Is Modifierfalse
                  Must Supporttrue
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  114. Composition.relatesTo:transformed.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..*
                  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())
                  116. Composition.relatesTo:transformed.code
                  Definition

                  The type of relationship that this composition has with anther composition or document.

                  Shortreplaces | transforms | signs | appends
                  Comments

                  If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

                  Control1..1
                  BindingThe codes SHALL be taken from DocumentRelationshipTypehttp://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1
                  (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

                  The type of relationship between documents.

                  Typecode
                  Is Modifierfalse
                  Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                  Summaryfalse
                  Fixed Valuetransforms
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  118. Composition.relatesTo:transformed.target[x]
                  Definition

                  Identifier of the Document or Composition transformed


                  The target composition/document of this relationship.

                  ShortIdentifier of the Document or Composition transformedTarget of the relationship
                  Control1..1
                  TypeChoice of: Identifier, Reference(Composition)
                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
                  • type @ $this
                  • 120. Composition.relatesTo:transformed.target[x]:targetIdentifier
                    Slice NametargetIdentifier
                    Definition

                    The target composition/document of this relationship.

                    ShortReference to the Bundle.identifier of the FHIR Clinical Document being appended, or to some other identifier of a non FHIR documentTarget of the relationship
                    Control01..1
                    TypeIdentifier, Reference(Composition)
                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    122. Composition.section
                    Definition

                    The root of the sections that make up the composition.

                    ShortComposition is broken into sections
                    Control10..*
                    TypeBackboneElement
                    Is Modifierfalse
                    Must Supporttrue
                    Summaryfalse
                    Invariantscmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                    cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    cmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                    cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                    124. Composition.section.extension:change-made
                    Slice Namechange-made
                    Definition

                    Change Made provides an annotation of a change that has been made to the Composition or Composition section. The extension is experimental and may overlap with other extensions, such as use of note in R6. The extension contains two parts: change - the description of the change, version-changed - the FHIR Clinical Document version that was changed. Note: Calculating a differential between versions is suggested for safely finding all changes as this annotation may not contain all changes between versions.

                    ShortChange Made
                    Control0..1
                    This element is affected by the following invariants: ele-1
                    TypeExtension(Change Made) (Complex Extension)
                    Is Modifierfalse
                    Must Supporttrue
                    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())
                    126. Composition.section.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..*
                    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())
                    128. Composition.section.title
                    Definition

                    The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

                    ShortLabel for section (e.g. for ToC)
                    Comments

                    The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

                    Control10..1
                    Typestring
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Must Supporttrue
                    Summaryfalse
                    Requirements

                    Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

                    Alternate Namesheader, label, caption
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    130. Composition.section.code
                    Definition

                    A code identifying the kind of content contained within the section. This must be consistent with the section title.

                    ShortClassification of section (recommended)
                    Comments

                    The code identifies the section for an automated processor of the document. This is particularly relevant when using profiles to control the structure of the document.

                    If the section has content (instead of sub-sections), the section.code does not change the meaning or interpretation of the resource that is the content of the section in the comments for the section.code.

                    Control0..1
                    BindingFor example codes, see DocumentSectionCodeshttp://hl7.org/fhir/ValueSet/doc-section-codes|4.0.1
                    (example to http://hl7.org/fhir/ValueSet/doc-section-codes|4.0.1)

                    Classification of a section of a composition/document.

                    TypeCodeableConcept
                    Is Modifierfalse
                    Must Supporttrue
                    Summaryfalse
                    Requirements

                    Provides computable standardized labels to topics within the document.

                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    132. Composition.section.text
                    Definition

                    A human-readable narrative that contains the attested content of the section, 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.

                    ShortText summary of the section, for human interpretation
                    Comments

                    Document profiles may define what content should be represented in the narrative to ensure clinical safety.

                    Control0..1
                    This element is affected by the following invariants: cmp-1
                    TypeNarrative
                    Is Modifierfalse
                    Must Supporttrue
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

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

                    0. Composition
                    ShortUS Public Health Composition
                    2. Composition.extension
                    Control1..?
                    4. Composition.extension:R5-Composition-version
                    Slice NameR5-Composition-version
                    Definition

                    Public Health Composition versionNumber. This is equivalent to ClinicalDocument.versionNumber in CDA. The identifier of the containing Bundle is equivalent to ClinicalDocument.id in CDA and Composition.identifier is equivalent to ClinicalDocument.setId in CDA. This is a version specific identifier for the composition, assigned when each version is created/updated.

                    While each resource, including the composition itself, has its own version identifier, this is a formal identifier for the logical version of the composition as a whole. It would remain constant if the resources were moved to a new server, and all got new individual resource versions, for example.

                    ShortPublic Health Composition versionNumber
                    Control1..?
                    6. Composition.identifier
                    Definition

                    Public Health Composition identifier. This is equivalent to ClinicalDocument.setId in CDA. The identifier of the containing Bundle is equivalent to ClinicalDocument.id in CDA and Composition.extensionVersionNumber is equivalent to ClinicalDocument.versionNumber in CDA.

                    ShortPublic Health Composition identifier
                    NoteThis is a business identifier, not a resource identifier (see discussion)
                    Control1..?
                    8. Composition.status
                    Must Supporttrue
                    10. Composition.type
                    ShortType of this public health report
                    12. Composition.subject
                    Definition

                    The subject of this Composition is the patient.

                    ShortPatient
                    TypeReference(US Public Health Patient, US Core Patient Profile)
                    14. Composition.encounter
                    Definition

                    This Encounter profile represents the encounter related to the public health event.

                    ShortEncounter related to the public health event
                    Control1..?
                    TypeReference(US Public Health Encounter)
                    Must Supporttrue
                    16. Composition.date
                    Short(USCDI+) Date of the Report
                    18. Composition.author
                    Definition

                    It is possible to have multiple authors - especially in the case where the default author is the organization. For public health reporting this could contain the contact details for the Infection Control Professional (ICP) specific to the condition being reported on. If the main author of the document is not a person, it is recommended to have an additional person author contact who is specific for a disease for follow-up requirements. This person could be the ICP. Where a trigger occurs outside of an encounter the author will represent the Provider and Facility for reporting purposes.

                    ShortThe author(s) of the document
                    TypeReference(US Public Health PractitionerRole, US Core Practitioner Profile, US Public Health Organization, Device)
                    20. Composition.custodian
                    ShortCustodian Organization Address, Custodian Organization Id, Custodian Organization Name, Custodian Organization Telecom (contained in referenced US Public Health Organization)
                    TypeReference(US Public Health Organization)
                    22. Composition.relatesTo:replaced_document
                    Slice Namereplaced_document
                    Definition

                    Document or Composition that this Composition replaces

                    ShortDocument or Composition that this Composition replaces
                    24. Composition.relatesTo:replaced_document.target[x]
                    Definition

                    Identifier/Reference to the Document or Composition replaced

                    ShortIdentifier/Reference to the Document or Composition replaced
                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                    26. Composition.relatesTo:transformed
                    Slice Nametransformed
                    Definition

                    Document of Composition that this Composition is transformed from

                    ShortDocument or Composition that this Composition is transformed from
                    Control0..1
                    Must Supporttrue
                    28. Composition.relatesTo:transformed.code
                    Fixed Valuetransforms
                    30. Composition.relatesTo:transformed.target[x]
                    Definition

                    Identifier of the Document or Composition transformed

                    ShortIdentifier of the Document or Composition transformed
                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]

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

                    0. Composition
                    Definition

                    A set of healthcare-related information that is assembled together into a single logical package that provides a single coherent statement of meaning, establishes its own context and that has clinical attestation with regard to who is making the statement. A Composition defines the structure and narrative content necessary for a document. However, a Composition alone does not constitute a document. Rather, the Composition must be the first entry in a Bundle where Bundle.type=document, and any other resources referenced from Composition must be included as subsequent entries in the Bundle (for example Patient, Practitioner, Encounter, etc.).

                    ShortUS Public Health Composition
                    Comments

                    While the focus of this specification is on patient-specific clinical statements, this resource can also apply to other healthcare-related statements such as study protocol designs, healthcare invoices and other activities that are not necessarily patient-specific or clinical.

                    Control0..*
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsdom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
                    dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty())
                    dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
                    dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
                    dom-6: A resource should have narrative for robust management (text.`div`.exists())
                    clindoc-limit-participantType: The R4 FHIR Clinical Document Composition Profile contains specific extensions for data entry person, informant, information recipient, primary information recipient and tracker. So, they are not allowed in the participant extension in the R4 profile. In R6, the intention is to have dedicated-named slices of a backbone element. (extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='ENT').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='INF').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='IRCP').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='PRCP').not() and extension.where(url='http://hl7.org/fhir/uv/fhir-clinical-document/StructureDefinition/ParticipantExtension').extension.where(url='type').value.coding.exists(system='http://terminology.hl7.org/CodeSystem/v3-ParticipationType' and code='TRC').not())
                    2. Composition.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
                    Is Modifierfalse
                    Summarytrue
                    4. Composition.meta
                    Definition

                    The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

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

                    The base language in which the resource is written.

                    ShortLanguage of the resource content
                    Comments

                    Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).

                    Control0..1
                    BindingThe codes SHOULD be taken from CommonLanguages
                    (preferred to http://hl7.org/fhir/ValueSet/languages|4.0.1)

                    A human language.

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

                    An Extension

                    ShortExtension
                    Control1..*
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                    SlicingThis element introduces a set of slices on Composition.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                    • value @ url
                    • 16. Composition.extension:R5-Composition-version
                      Slice NameR5-Composition-version
                      Definition

                      Public Health Composition versionNumber. This is equivalent to ClinicalDocument.versionNumber in CDA. The identifier of the containing Bundle is equivalent to ClinicalDocument.id in CDA and Composition.identifier is equivalent to ClinicalDocument.setId in CDA. This is a version specific identifier for the composition, assigned when each version is created/updated.

                      While each resource, including the composition itself, has its own version identifier, this is a formal identifier for the logical version of the composition as a whole. It would remain constant if the resources were moved to a new server, and all got new individual resource versions, for example.

                      ShortPublic Health Composition versionNumber
                      Control1..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Extension Definition for Composition.version for Version 5.0) (Extension Type: string)
                      Is Modifierfalse
                      Must Supporttrue
                      Summaryfalse
                      Labelclinical document version number
                      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. Composition.extension:data-enterer
                      Slice Namedata-enterer
                      Definition

                      The Data Enterer Extension represents the person who transferred the content, written or dictated, into the clinical document. To clarify, an author provides the content, subject to their own interpretation; a dataEnterer adds an author's information to the electronic system.

                      ShortA Data Enterer represents the person who transferred the content, written or dictated, into the clinical document. To clarify, an author provides the content, subject to their own interpretation; a dataEnterer adds an author's information to the electronic system.
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Data Enterer Extension) (Complex Extension)
                      Is Modifierfalse
                      Must Supporttrue
                      Labeldate enterer
                      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. Composition.extension:informant
                      Slice Nameinformant
                      Definition

                      Informant Extension describes an information source for any content within the clinical document. This informant is constrained for use when the source of information is an assigned health care provider for the patient.

                      ShortAn Informant is an information source for any content within the clinical document. This informant is constrained for use when the source of information is an assigned health care provider for the patient.
                      Control0..*
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Informant Extension) (Complex Extension)
                      Is Modifierfalse
                      Must Supporttrue
                      Labelinformant
                      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. Composition.extension:information-recipient
                      Slice Nameinformation-recipient
                      Definition

                      The Information Recipient Extension records the intended recipient of the information at the time the document was created.

                      ShortAn Information Recipient is the intended recipient of the information at the time the document was created.
                      Control0..*
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Information Recipient Extension) (Complex Extension)
                      Is Modifierfalse
                      Must Supporttrue
                      Labelinformation recipient of type primary, secondary information recipient or a generic information recipient
                      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. Composition.extension:participant
                      Slice Nameparticipant
                      Definition

                      Participant Extension identifies supporting entities, including parents, relatives, caregivers, insurance policyholders, guarantors, and others related in some way to the patient. A supporting person or organization is an individual or an organization with a relationship to the patient. A supporting person who is playing multiple roles would be recorded in multiple participants (e.g., emergency contact and next-of-kin).

                      ShortA Participant that is not a data-enter, information-recipient nor an informant
                      Control0..*
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Participant Extension) (Complex Extension)
                      Is Modifierfalse
                      Must Supporttrue
                      LabelA Participant that is not a data-enter, information-recipient nor an informant
                      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())
                      26. Composition.extension:consent
                      Slice Nameconsent
                      Definition

                      Consent Extension refers to a FHIR Consent instance that indicates a patient's consent

                      Shortconsent
                      Control0..*
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Consent Extension) (Extension Type: Reference)
                      Is Modifierfalse
                      Must Supporttrue
                      Summaryfalse
                      Labelconsent
                      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())
                      28. Composition.extension:basedOn
                      Slice NamebasedOn
                      Definition

                      A plan, proposal or order that is fulfilled in whole or in part by this event.

                      ShortThe clinical action, such as a plan, proposal or order that is fulfilled by or precipitated this FHIR Clinical Document, such as a radiologists report of an x-ray.
                      Control0..*
                      TypeExtension(Based on) (Extension Type: Reference(Resource))
                      Is Modifierfalse
                      Must Supporttrue
                      Summaryfalse
                      LabelbasedOn, e.g. order fullfilled
                      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())
                      30. Composition.extension:change-made
                      Slice Namechange-made
                      Definition

                      Change Made provides an annotation of a change that has been made to the Composition or Composition section. The extension is experimental and may overlap with other extensions, such as use of note in R6. The extension contains two parts: change - the description of the change, version-changed - the FHIR Clinical Document version that was changed. Note: Calculating a differential between versions is suggested for safely finding all changes as this annotation may not contain all changes between versions.

                      ShortNote of changes made, calculating changes maybe required for safety as this extension may not contain all changes. Experimental, may overlap with other elements such as FHIR R6 note.
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      TypeExtension(Change Made) (Complex Extension)
                      Is Modifierfalse
                      Must Supporttrue
                      LabelNote of changes made, calculating changes maybe required for safety as this extension may not contain all changes. Experimental, may overlap with other elements such as FHIR R6 note.
                      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())
                      32. Composition.modifierExtension
                      Definition

                      An Extension

                      ShortExtension
                      Control0..*
                      TypeExtension
                      Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                      SlicingThis element introduces a set of slices on Composition.modifierExtension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                      • value @ url
                      • 34. Composition.modifierExtension:R5-Composition-status
                        Slice NameR5-Composition-status
                        Definition

                        An Extension

                        ShortThis allows for additional status values found in R5. However, exercise caution as the R4 Composition.status is required.
                        Control0..1
                        This element is affected by the following invariants: ele-1
                        TypeExtension(Extension Definition for Composition.status for Version 5.0) (Extension Type: Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Dosage, Meta)
                        Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status values such as cancelled (which means that the resource should not be treated as valid).
                        Must Supporttrue
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                        36. Composition.identifier
                        Definition

                        Public Health Composition identifier. This is equivalent to ClinicalDocument.setId in CDA. The identifier of the containing Bundle is equivalent to ClinicalDocument.id in CDA and Composition.extensionVersionNumber is equivalent to ClinicalDocument.versionNumber in CDA.

                        ShortPublic Health Composition identifier
                        Comments

                        Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate.

                        NoteThis is a business identifier, not a resource identifier (see discussion)
                        Control1..1
                        TypeIdentifier
                        Is Modifierfalse
                        Must Supporttrue
                        Summarytrue
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        38. Composition.status
                        Definition

                        The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document.

                        Shortpreliminary | final | amended | entered-in-error
                        Comments

                        If a composition is marked as withdrawn, the compositions/documents in the series, or data from the composition or document series, should never be displayed to a user without being clearly marked as untrustworthy. The flag "entered-in-error" is why this element is labeled as a modifier of other elements.

                        Some reporting work flows require that the original narrative of a final document never be altered; instead, only new narrative can be added. The composition resource has no explicit status for explicitly noting whether this business rule is in effect. This would be handled by an extension if required.

                        Control1..1
                        BindingThe codes SHALL be taken from CompositionStatus
                        (required to http://hl7.org/fhir/ValueSet/composition-status|4.0.1)

                        The workflow/clinical status of the composition.

                        Typecode
                        Is Modifiertrue because This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid
                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                        Must Supporttrue
                        Summarytrue
                        Requirements

                        Need to be able to mark interim, amended, or withdrawn compositions or documents.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        40. Composition.type
                        Definition

                        Specifies the particular kind of composition (e.g. History and Physical, Discharge Summary, Progress Note). This usually equates to the purpose of making the composition.

                        ShortType of this public health report
                        Comments

                        For Composition type, LOINC is ubiquitous and strongly endorsed by HL7. Most implementation guides will require a specific LOINC code, or use LOINC as an extensible binding.

                        Control1..1
                        BindingThe codes SHOULD be taken from FHIRDocumentTypeCodes
                        (preferred to http://hl7.org/fhir/ValueSet/doc-typecodes|4.0.1)

                        Type of a composition.

                        TypeCodeableConcept
                        Is Modifierfalse
                        Must Supporttrue
                        Summarytrue
                        Requirements

                        Key metadata element describing the composition, used in searching/filtering.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        42. Composition.category
                        Definition

                        A categorization for the type of the composition - helps for indexing and searching. This may be implied by or derived from the code specified in the Composition Type.

                        ShortCategorization of Composition
                        Comments

                        This is a metadata field from XDS/MHD.

                        Control1..*
                        BindingFor example codes, see DocumentClassValueSet
                        (example to http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1)

                        High-level kind of a clinical document at a macro level.

                        TypeCodeableConcept
                        Is Modifierfalse
                        Must Supporttrue
                        Summarytrue
                        Requirements

                        Helps humans to assess whether the composition is of interest when viewing an index of compositions or documents.

                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        SlicingThis element introduces a set of slices on Composition.category. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                        • value @ $this
                        • 44. Composition.category:clinicalnotecategory
                          Slice Nameclinicalnotecategory
                          Definition

                          A categorization for the type of the composition - helps for indexing and searching. This may be implied by or derived from the code specified in the Composition Type.

                          ShortCategory for Clinical Note
                          Comments

                          This is a metadata field from XDS/MHD.

                          Control1..1
                          BindingFor example codes, see DocumentClassValueSet
                          (example to http://hl7.org/fhir/ValueSet/document-classcodes|4.0.1)

                          High-level kind of a clinical document at a macro level.

                          TypeCodeableConcept
                          Is Modifierfalse
                          Must Supporttrue
                          Summarytrue
                          Requirements

                          Helps humans to assess whether the composition is of interest when viewing an index of compositions or documents.

                          Pattern Value{
                            "coding" : [{
                              "system" : "http://loinc.org",
                              "code" : "107903-7",
                              "display" : "Clinical note"
                            }]
                          }
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          46. Composition.subject
                          Definition

                          The subject of this Composition is the patient.

                          ShortPatient
                          Comments

                          For clinical documents, this is usually the patient.

                          Control1..1
                          TypeReference(US Public Health Patient, US Core Patient Profile)
                          Is Modifierfalse
                          Must Supporttrue
                          Must Support TypesNo must-support rules about the choice of types/profiles
                          Summarytrue
                          Requirements

                          Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          48. Composition.encounter
                          Definition

                          This Encounter profile represents the encounter related to the public health event.

                          ShortEncounter related to the public health event
                          Control1..1
                          TypeReference(US Public Health Encounter)
                          Is Modifierfalse
                          Must Supporttrue
                          Summarytrue
                          Requirements

                          Provides context for the composition and supports searching.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          50. Composition.date
                          Definition

                          The composition editing time, when the composition was last logically changed by the author.

                          Short(USCDI+) Date of the Report
                          Comments

                          The Last Modified Date on the composition may be after the date of the document was attested without being changed.

                          Control1..1
                          TypedateTime
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supporttrue
                          Summarytrue
                          Requirements

                          dateTime is used for tracking, organizing versions and searching. Note that this is the time of authoring. When packaged in a document, Bundle.timestamp is the date of packaging.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          52. Composition.author
                          Definition

                          It is possible to have multiple authors - especially in the case where the default author is the organization. For public health reporting this could contain the contact details for the Infection Control Professional (ICP) specific to the condition being reported on. If the main author of the document is not a person, it is recommended to have an additional person author contact who is specific for a disease for follow-up requirements. This person could be the ICP. Where a trigger occurs outside of an encounter the author will represent the Provider and Facility for reporting purposes.

                          ShortThe author(s) of the document
                          Control1..*
                          TypeReference(US Public Health PractitionerRole, US Core Practitioner Profile, US Public Health Organization, Device)
                          Is Modifierfalse
                          Must Supporttrue
                          Must Support TypesNo must-support rules about the choice of types/profiles
                          Summarytrue
                          Requirements

                          Identifies who is responsible for the content.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          54. Composition.title
                          Definition

                          Official human-readable label for the composition.

                          ShortHuman Readable name/title
                          Comments

                          For many compositions, the title is the same as the text or a display name of Composition.type (e.g. a "consultation" or "progress note"). Note that CDA does not make title mandatory, but there are no known cases where it is useful for title to be omitted, so it is mandatory here. Feedback on this requirement is welcome during the trial use period.

                          Control1..1
                          Typestring
                          Is Modifierfalse
                          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                          Must Supporttrue
                          Summarytrue
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          56. Composition.confidentiality
                          Definition

                          The code specifying the level of confidentiality of the Composition.

                          ShortAs defined by affinity domain
                          Comments

                          The exact use of this element, and enforcement and issues related to highly sensitive documents are out of scope for the base specification, and delegated to implementation profiles (see security section). This element is labeled as a modifier because highly confidential documents must not be treated as if they are not.

                          Control0..1
                          BindingThe codes SHALL be taken from v3.ConfidentialityClassification (2014-03-26)
                          (required to http://terminology.hl7.org/ValueSet/v3-ConfidentialityClassification|2014-03-26)

                          Codes specifying the level of confidentiality of the composition.

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

                          A participant who has attested to the accuracy of the composition/document.

                          ShortAttests to accuracy of composition
                          Comments

                          Only list each attester once.

                          Control0..*
                          TypeBackboneElement
                          Is Modifierfalse
                          Must Supporttrue
                          Summaryfalse
                          Requirements

                          Identifies responsibility for the accuracy of the composition content.

                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          SlicingThis element introduces a set of slices on Composition.attester. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                          • value @ mode
                          • 60. Composition.attester.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
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            62. Composition.attester.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..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Alternate Namesextensions, user content
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            64. Composition.attester.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..*
                            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())
                            66. Composition.attester.mode
                            Definition

                            The type of attestation the authenticator offers.

                            Shortpersonal | professional | legal | official
                            Control1..1
                            BindingThe codes SHALL be taken from CompositionAttestationMode
                            (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

                            The way in which a person authenticated a composition.

                            Typecode
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Must Supporttrue
                            Summaryfalse
                            Requirements

                            Indicates the level of authority of the attestation.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            68. Composition.attester.time
                            Definition

                            When the composition was attested by the party.

                            ShortWhen the composition was attested
                            Control0..1
                            TypedateTime
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Must Supporttrue
                            Summaryfalse
                            Requirements

                            Identifies when the information in the composition was deemed accurate. (Things may have changed since then.).

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            70. Composition.attester.party
                            Definition

                            Who attested the composition in the specified way.

                            ShortWho attested the composition
                            Control0..1
                            TypeReference(Patient, RelatedPerson, Practitioner, PractitionerRole, Organization)
                            Is Modifierfalse
                            Must Supporttrue
                            Must Support TypesNo must-support rules about the choice of types/profiles
                            Summaryfalse
                            Requirements

                            Identifies who has taken on the responsibility for accuracy of the composition content.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            72. Composition.attester:legal_attester
                            Slice Namelegal_attester
                            Definition

                            A participant who has attested to the accuracy of the composition/document.

                            Shortaka legal authenticator
                            Comments

                            Only list each attester once.

                            Control0..1
                            TypeBackboneElement
                            Is Modifierfalse
                            Must Supporttrue
                            Summaryfalse
                            Requirements

                            Identifies responsibility for the accuracy of the composition content.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            74. Composition.attester:legal_attester.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
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            76. Composition.attester:legal_attester.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..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Alternate Namesextensions, user content
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            78. Composition.attester:legal_attester.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..*
                            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())
                            80. Composition.attester:legal_attester.mode
                            Definition

                            The type of attestation the authenticator offers.

                            Shortpersonal | professional | legal | official
                            Control1..1
                            BindingThe codes SHALL be taken from CompositionAttestationMode
                            (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

                            The way in which a person authenticated a composition.

                            Typecode
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Requirements

                            Indicates the level of authority of the attestation.

                            Pattern Valuelegal
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            82. Composition.attester:legal_attester.time
                            Definition

                            When the composition was attested by the party.

                            ShortWhen the composition was attested
                            Control0..1
                            TypedateTime
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Requirements

                            Identifies when the information in the composition was deemed accurate. (Things may have changed since then.).

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            84. Composition.attester:legal_attester.party
                            Definition

                            Who attested the composition in the specified way.

                            ShortWho attested the composition
                            Control0..1
                            TypeReference(Patient, RelatedPerson, Practitioner, PractitionerRole, Organization)
                            Is Modifierfalse
                            Summaryfalse
                            Requirements

                            Identifies who has taken on the responsibility for accuracy of the composition content.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            86. Composition.attester:professional_attester
                            Slice Nameprofessional_attester
                            Definition

                            A participant who has attested to the accuracy of the composition/document.

                            Shortaka authenticator
                            Comments

                            Only list each attester once.

                            Control0..*
                            TypeBackboneElement
                            Is Modifierfalse
                            Must Supporttrue
                            Summaryfalse
                            Requirements

                            Identifies responsibility for the accuracy of the composition content.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            88. Composition.attester:professional_attester.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
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            90. Composition.attester:professional_attester.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..*
                            TypeExtension
                            Is Modifierfalse
                            Summaryfalse
                            Alternate Namesextensions, user content
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                            92. Composition.attester:professional_attester.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..*
                            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())
                            94. Composition.attester:professional_attester.mode
                            Definition

                            The type of attestation the authenticator offers.

                            Shortpersonal | professional | legal | official
                            Control1..1
                            BindingThe codes SHALL be taken from CompositionAttestationMode
                            (required to http://hl7.org/fhir/ValueSet/composition-attestation-mode|4.0.1)

                            The way in which a person authenticated a composition.

                            Typecode
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Requirements

                            Indicates the level of authority of the attestation.

                            Pattern Valueprofessional
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            96. Composition.attester:professional_attester.time
                            Definition

                            When the composition was attested by the party.

                            ShortWhen the composition was attested
                            Control0..1
                            TypedateTime
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Requirements

                            Identifies when the information in the composition was deemed accurate. (Things may have changed since then.).

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            98. Composition.attester:professional_attester.party
                            Definition

                            Who attested the composition in the specified way.

                            ShortWho attested the composition
                            Control0..1
                            TypeReference(Patient, RelatedPerson, Practitioner, PractitionerRole, Organization)
                            Is Modifierfalse
                            Summaryfalse
                            Requirements

                            Identifies who has taken on the responsibility for accuracy of the composition content.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            100. Composition.custodian
                            Definition

                            Identifies the organization or group who is responsible for ongoing maintenance of and access to the composition/document information.

                            ShortCustodian Organization Address, Custodian Organization Id, Custodian Organization Name, Custodian Organization Telecom (contained in referenced US Public Health Organization)
                            Comments

                            This is useful when documents are derived from a composition - provides guidance for how to get the latest version of the document. This is optional because this is sometimes not known by the authoring system, and can be inferred by context. However, it is important that this information be known when working with a derived document, so providing a custodian is encouraged.

                            Control0..1
                            TypeReference(US Public Health Organization)
                            Is Modifierfalse
                            Must Supporttrue
                            Summarytrue
                            Requirements

                            Identifies where to go to find the current version, where to report issues, etc.

                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            102. Composition.relatesTo
                            Definition

                            Relationships that this composition has with other compositions or documents that already exist.

                            ShortRelationships to other compositions/documents
                            Comments

                            A document is a version specific composition.

                            Control0..*
                            TypeBackboneElement
                            Is Modifierfalse
                            Must Supporttrue
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            SlicingThis element introduces a set of slices on Composition.relatesTo. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                            • value @ code
                            • type @ target
                            • 104. Composition.relatesTo.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
                              Is Modifierfalse
                              XML FormatIn the XML format, this property is represented as an attribute.
                              Summaryfalse
                              106. Composition.relatesTo.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..*
                              TypeExtension
                              Is Modifierfalse
                              Summaryfalse
                              Alternate Namesextensions, user content
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                              108. Composition.relatesTo.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..*
                              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())
                              110. Composition.relatesTo.code
                              Definition

                              The type of relationship that this composition has with anther composition or document.

                              Shortreplaces | transforms | signs | appends
                              Comments

                              If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

                              Control1..1
                              BindingThe codes SHALL be taken from DocumentRelationshipType
                              (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

                              The type of relationship between documents.

                              Typecode
                              Is Modifierfalse
                              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                              Summaryfalse
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              112. Composition.relatesTo.target[x]
                              Definition

                              The target composition/document of this relationship.

                              ShortTarget of the relationship
                              Control1..1
                              TypeChoice of: Identifier, Reference(Composition)
                              [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                              Is Modifierfalse
                              Summaryfalse
                              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                              SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                              • type @ $this
                              • 114. Composition.relatesTo.target[x]:targetIdentifier
                                Slice NametargetIdentifier
                                Definition

                                The target composition/document of this relationship.

                                ShortReference to the Bundle.identifier of the FHIR Clinical Document being appended, or to some other identifier of a non FHIR document
                                Control0..1
                                TypeIdentifier
                                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                Is Modifierfalse
                                Summaryfalse
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                116. Composition.relatesTo:replaced_document
                                Slice Namereplaced_document
                                Definition

                                Document or Composition that this Composition replaces

                                ShortDocument or Composition that this Composition replaces
                                Comments

                                A document is a version specific composition.

                                Control0..*
                                TypeBackboneElement
                                Is Modifierfalse
                                Must Supporttrue
                                Summaryfalse
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                118. Composition.relatesTo:replaced_document.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
                                Is Modifierfalse
                                XML FormatIn the XML format, this property is represented as an attribute.
                                Summaryfalse
                                120. Composition.relatesTo:replaced_document.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..*
                                TypeExtension
                                Is Modifierfalse
                                Summaryfalse
                                Alternate Namesextensions, user content
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                122. Composition.relatesTo:replaced_document.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..*
                                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())
                                124. Composition.relatesTo:replaced_document.code
                                Definition

                                The type of relationship that this composition has with anther composition or document.

                                Shortreplaces | transforms | signs | appends
                                Comments

                                If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

                                Control1..1
                                BindingThe codes SHALL be taken from DocumentRelationshipType
                                (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

                                The type of relationship between documents.

                                Typecode
                                Is Modifierfalse
                                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                Summaryfalse
                                Pattern Valuereplaces
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                126. Composition.relatesTo:replaced_document.target[x]
                                Definition

                                Identifier/Reference to the Document or Composition replaced

                                ShortIdentifier/Reference to the Document or Composition replaced
                                Control1..1
                                TypeIdentifier
                                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                Is Modifierfalse
                                Summaryfalse
                                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
                                • type @ $this
                                • 128. Composition.relatesTo:replaced_document.target[x]:targetIdentifier
                                  Slice NametargetIdentifier
                                  Definition

                                  The target composition/document of this relationship.

                                  ShortReference to the Bundle.identifier of the FHIR Clinical Document being replaced, or to some other identifier of a non FHIR document
                                  Control1..1
                                  TypeIdentifier
                                  [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                  Is Modifierfalse
                                  Summaryfalse
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  130. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.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
                                  Is Modifierfalse
                                  XML FormatIn the XML format, this property is represented as an attribute.
                                  Summaryfalse
                                  132. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.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..*
                                  TypeExtension
                                  Is Modifierfalse
                                  Summaryfalse
                                  Alternate Namesextensions, user content
                                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                  ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                  SlicingThis element introduces a set of slices on Composition.relatesTo.target[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                  • value @ url
                                  • 134. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.use
                                    Definition

                                    The purpose of this identifier.

                                    Shortusual | official | temp | secondary | old (If known)
                                    Comments

                                    Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

                                    Control0..1
                                    BindingThe codes SHALL be taken from IdentifierUse
                                    (required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

                                    Identifies the purpose for this identifier, if known .

                                    Typecode
                                    Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Requirements

                                    Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    136. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.type
                                    Definition

                                    A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

                                    ShortDescription of identifier
                                    Comments

                                    This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

                                    Control0..1
                                    BindingUnless not suitable, these codes SHALL be taken from Identifier Type Codes
                                    (extensible to http://hl7.org/fhir/ValueSet/identifier-type|4.0.1)

                                    A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

                                    TypeCodeableConcept
                                    Is Modifierfalse
                                    Summarytrue
                                    Requirements

                                    Allows users to make use of identifiers when the identifier system is not known.

                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    138. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.system
                                    Definition

                                    Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

                                    ShortThe namespace for the identifier value
                                    Comments

                                    Identifier.system is always case sensitive.

                                    Control1..1
                                    Typeuri
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    Requirements

                                    There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

                                    ExampleGeneral: http://www.acme.com/identifiers/patient
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    140. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.value
                                    Definition

                                    The portion of the identifier typically relevant to the user and which is unique within the context of the system.

                                    ShortThe value that is unique
                                    Comments

                                    If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

                                    Control1..1
                                    Typestring
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summarytrue
                                    ExampleGeneral: 123456
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    142. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.period
                                    Definition

                                    Time period during which identifier is/was valid for use.

                                    ShortTime period when id is/was valid for use
                                    Control0..1
                                    TypePeriod
                                    Is Modifierfalse
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    144. Composition.relatesTo:replaced_document.target[x]:targetIdentifier.assigner
                                    Definition

                                    Organization that issued/manages the identifier.

                                    ShortOrganization that issued id (may be just text)
                                    Comments

                                    The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.

                                    Control0..1
                                    TypeReference(Organization)
                                    Is Modifierfalse
                                    Summarytrue
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    146. Composition.relatesTo:appended_document
                                    Slice Nameappended_document
                                    Definition

                                    Relationships that this composition has with other compositions or documents that already exist.

                                    ShortThe document(s) being appended too
                                    Comments

                                    A document is a version specific composition.

                                    Control0..*
                                    TypeBackboneElement
                                    Is Modifierfalse
                                    Must Supporttrue
                                    Summaryfalse
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    148. Composition.relatesTo:appended_document.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
                                    Is Modifierfalse
                                    XML FormatIn the XML format, this property is represented as an attribute.
                                    Summaryfalse
                                    150. Composition.relatesTo:appended_document.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..*
                                    TypeExtension
                                    Is Modifierfalse
                                    Summaryfalse
                                    Alternate Namesextensions, user content
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                    152. Composition.relatesTo:appended_document.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..*
                                    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())
                                    154. Composition.relatesTo:appended_document.code
                                    Definition

                                    The type of relationship that this composition has with anther composition or document.

                                    Shortreplaces | transforms | signs | appends
                                    Comments

                                    If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

                                    Control1..1
                                    BindingThe codes SHALL be taken from DocumentRelationshipType
                                    (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

                                    The type of relationship between documents.

                                    Typecode
                                    Is Modifierfalse
                                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                    Summaryfalse
                                    Pattern Valueappends
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    156. Composition.relatesTo:appended_document.target[x]
                                    Definition

                                    The target composition/document of this relationship.

                                    ShortTarget of the relationship
                                    Control1..1
                                    TypeIdentifier
                                    [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                    Is Modifierfalse
                                    Summaryfalse
                                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                    SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
                                    • type @ $this
                                    • 158. Composition.relatesTo:appended_document.target[x]:targetIdentifier
                                      Slice NametargetIdentifier
                                      Definition

                                      The target composition/document of this relationship.

                                      ShortTarget of the relationship
                                      Control1..1
                                      TypeIdentifier
                                      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                      Is Modifierfalse
                                      Summaryfalse
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      160. Composition.relatesTo:appended_document.target[x]:targetIdentifier.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
                                      Is Modifierfalse
                                      XML FormatIn the XML format, this property is represented as an attribute.
                                      Summaryfalse
                                      162. Composition.relatesTo:appended_document.target[x]:targetIdentifier.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..*
                                      TypeExtension
                                      Is Modifierfalse
                                      Summaryfalse
                                      Alternate Namesextensions, user content
                                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                      ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                      SlicingThis element introduces a set of slices on Composition.relatesTo.target[x].extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                      • value @ url
                                      • 164. Composition.relatesTo:appended_document.target[x]:targetIdentifier.use
                                        Definition

                                        The purpose of this identifier.

                                        Shortusual | official | temp | secondary | old (If known)
                                        Comments

                                        Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

                                        Control1..1
                                        BindingThe codes SHALL be taken from IdentifierUse
                                        (required to http://hl7.org/fhir/ValueSet/identifier-use|4.0.1)

                                        Identifies the purpose for this identifier, if known .

                                        Typecode
                                        Is Modifiertrue because This is labeled as "Is Modifier" because applications should not mistake a temporary id for a permanent one.
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Requirements

                                        Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        166. Composition.relatesTo:appended_document.target[x]:targetIdentifier.type
                                        Definition

                                        A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

                                        ShortDescription of identifier
                                        Comments

                                        This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

                                        Control0..1
                                        BindingUnless not suitable, these codes SHALL be taken from Identifier Type Codes
                                        (extensible to http://hl7.org/fhir/ValueSet/identifier-type|4.0.1)

                                        A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

                                        TypeCodeableConcept
                                        Is Modifierfalse
                                        Summarytrue
                                        Requirements

                                        Allows users to make use of identifiers when the identifier system is not known.

                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        168. Composition.relatesTo:appended_document.target[x]:targetIdentifier.system
                                        Definition

                                        Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

                                        ShortThe namespace for the identifier value
                                        Comments

                                        Identifier.system is always case sensitive.

                                        Control0..1
                                        Typeuri
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        Requirements

                                        There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

                                        ExampleGeneral: http://www.acme.com/identifiers/patient
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        170. Composition.relatesTo:appended_document.target[x]:targetIdentifier.value
                                        Definition

                                        The portion of the identifier typically relevant to the user and which is unique within the context of the system.

                                        ShortThe value that is unique
                                        Comments

                                        If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

                                        Control0..1
                                        Typestring
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summarytrue
                                        ExampleGeneral: 123456
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        172. Composition.relatesTo:appended_document.target[x]:targetIdentifier.period
                                        Definition

                                        Time period during which identifier is/was valid for use.

                                        ShortTime period when id is/was valid for use
                                        Control0..1
                                        TypePeriod
                                        Is Modifierfalse
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        174. Composition.relatesTo:appended_document.target[x]:targetIdentifier.assigner
                                        Definition

                                        Organization that issued/manages the identifier.

                                        ShortOrganization that issued id (may be just text)
                                        Comments

                                        The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.

                                        Control0..1
                                        TypeReference(Organization)
                                        Is Modifierfalse
                                        Summarytrue
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        176. Composition.relatesTo:transformed
                                        Slice Nametransformed
                                        Definition

                                        Document of Composition that this Composition is transformed from

                                        ShortDocument or Composition that this Composition is transformed from
                                        Comments

                                        A document is a version specific composition.

                                        Control0..1
                                        TypeBackboneElement
                                        Is Modifierfalse
                                        Must Supporttrue
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        178. Composition.relatesTo:transformed.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
                                        Is Modifierfalse
                                        XML FormatIn the XML format, this property is represented as an attribute.
                                        Summaryfalse
                                        180. Composition.relatesTo:transformed.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..*
                                        TypeExtension
                                        Is Modifierfalse
                                        Summaryfalse
                                        Alternate Namesextensions, user content
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                        182. Composition.relatesTo:transformed.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..*
                                        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())
                                        184. Composition.relatesTo:transformed.code
                                        Definition

                                        The type of relationship that this composition has with anther composition or document.

                                        Shortreplaces | transforms | signs | appends
                                        Comments

                                        If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.

                                        Control1..1
                                        BindingThe codes SHALL be taken from DocumentRelationshipType
                                        (required to http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1)

                                        The type of relationship between documents.

                                        Typecode
                                        Is Modifierfalse
                                        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                        Summaryfalse
                                        Fixed Valuetransforms
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        186. Composition.relatesTo:transformed.target[x]
                                        Definition

                                        Identifier of the Document or Composition transformed

                                        ShortIdentifier of the Document or Composition transformed
                                        Control1..1
                                        TypeChoice of: Identifier, Reference(Composition)
                                        [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                        Is Modifierfalse
                                        Summaryfalse
                                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                        SlicingThis element introduces a set of slices on Composition.relatesTo.target[x]. The slices areUnordered and Closed, and can be differentiated using the following discriminators:
                                        • type @ $this
                                        • 188. Composition.relatesTo:transformed.target[x]:targetIdentifier
                                          Slice NametargetIdentifier
                                          Definition

                                          The target composition/document of this relationship.

                                          ShortReference to the Bundle.identifier of the FHIR Clinical Document being appended, or to some other identifier of a non FHIR document
                                          Control0..1
                                          TypeIdentifier
                                          [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                                          Is Modifierfalse
                                          Summaryfalse
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          190. Composition.event
                                          Definition

                                          The clinical service, such as a colonoscopy or an appendectomy, being documented.

                                          ShortThe clinical service(s) being documented
                                          Comments

                                          The event needs to be consistent with the type element, though can provide further information if desired.

                                          Control0..*
                                          TypeBackboneElement
                                          Is Modifierfalse
                                          Summarytrue
                                          Requirements

                                          Provides context for the composition and creates a linkage between a resource describing an event and the composition created describing the event.

                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          192. Composition.event.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
                                          Is Modifierfalse
                                          XML FormatIn the XML format, this property is represented as an attribute.
                                          Summaryfalse
                                          194. Composition.event.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..*
                                          TypeExtension
                                          Is Modifierfalse
                                          Summaryfalse
                                          Alternate Namesextensions, user content
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          196. Composition.event.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..*
                                          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())
                                          198. Composition.event.code
                                          Definition

                                          This list of codes represents the main clinical acts, such as a colonoscopy or an appendectomy, being documented. In some cases, the event is inherent in the typeCode, such as a "History and Physical Report" in which the procedure being documented is necessarily a "History and Physical" act.

                                          ShortCode(s) that apply to the event being documented
                                          Comments

                                          An event can further specialize the act inherent in the typeCode, such as where it is simply "Procedure Report" and the procedure was a "colonoscopy". If one or more eventCodes are included, they SHALL NOT conflict with the values inherent in the classCode, practiceSettingCode or typeCode, as such a conflict would create an ambiguous situation. This short list of codes is provided to be used as key words for certain types of queries.

                                          Control0..*
                                          BindingFor example codes, see ActCode (3.0.0)
                                          (example to http://terminology.hl7.org/ValueSet/v3-ActCode|3.0.0)

                                          This list of codes represents the main clinical acts being documented.

                                          TypeCodeableConcept
                                          Is Modifierfalse
                                          Summarytrue
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          200. Composition.event.period
                                          Definition

                                          The period of time covered by the documentation. There is no assertion that the documentation is a complete representation for this period, only that it documents events during this time.

                                          ShortThe period covered by the documentation
                                          Control0..1
                                          TypePeriod
                                          Is Modifierfalse
                                          Summarytrue
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          202. Composition.event.detail
                                          Definition

                                          The description and/or reference of the event(s) being documented. For example, this could be used to document such a colonoscopy or an appendectomy.

                                          ShortThe event(s) being documented
                                          Control0..*
                                          TypeReference(Resource)
                                          Is Modifierfalse
                                          Summarytrue
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          204. Composition.section
                                          Definition

                                          The root of the sections that make up the composition.

                                          ShortComposition is broken into sections
                                          Control1..*
                                          TypeBackboneElement
                                          Is Modifierfalse
                                          Must Supporttrue
                                          Summaryfalse
                                          Invariantscmp-1: A section must contain at least one of text, entries, or sub-sections (text.exists() or entry.exists() or section.exists())
                                          cmp-2: A section can only have an emptyReason if it is empty (emptyReason.empty() or entry.empty())
                                          ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          206. Composition.section.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
                                          Is Modifierfalse
                                          XML FormatIn the XML format, this property is represented as an attribute.
                                          Summaryfalse
                                          208. Composition.section.extension
                                          Definition

                                          An Extension

                                          ShortExtension
                                          Control0..*
                                          TypeExtension
                                          Is Modifierfalse
                                          Summaryfalse
                                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                          ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                          SlicingThis element introduces a set of slices on Composition.section.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
                                          • value @ url
                                          • 210. Composition.section.extension:change-made
                                            Slice Namechange-made
                                            Definition

                                            Change Made provides an annotation of a change that has been made to the Composition or Composition section. The extension is experimental and may overlap with other extensions, such as use of note in R6. The extension contains two parts: change - the description of the change, version-changed - the FHIR Clinical Document version that was changed. Note: Calculating a differential between versions is suggested for safely finding all changes as this annotation may not contain all changes between versions.

                                            ShortChange Made
                                            Control0..1
                                            This element is affected by the following invariants: ele-1
                                            TypeExtension(Change Made) (Complex Extension)
                                            Is Modifierfalse
                                            Must Supporttrue
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            212. Composition.section.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..*
                                            TypeExtension
                                            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                                            Summarytrue
                                            Requirements

                                            Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

                                            Alternate Namesextensions, user content, modifiers
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                                            214. Composition.section.title
                                            Definition

                                            The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

                                            ShortLabel for section (e.g. for ToC)
                                            Comments

                                            The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

                                            Control1..1
                                            Typestring
                                            Is Modifierfalse
                                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                            Must Supporttrue
                                            Summaryfalse
                                            Requirements

                                            Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

                                            Alternate Namesheader, label, caption
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            216. Composition.section.code
                                            Definition

                                            A code identifying the kind of content contained within the section. This must be consistent with the section title.

                                            ShortClassification of section (recommended)
                                            Comments

                                            The code identifies the section for an automated processor of the document. This is particularly relevant when using profiles to control the structure of the document.

                                            If the section has content (instead of sub-sections), the section.code does not change the meaning or interpretation of the resource that is the content of the section in the comments for the section.code.

                                            Control0..1
                                            BindingFor example codes, see DocumentSectionCodes
                                            (example to http://hl7.org/fhir/ValueSet/doc-section-codes|4.0.1)

                                            Classification of a section of a composition/document.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Must Supporttrue
                                            Summaryfalse
                                            Requirements

                                            Provides computable standardized labels to topics within the document.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            218. Composition.section.author
                                            Definition

                                            Identifies who is responsible for the information in this section, not necessarily who typed it in.

                                            ShortWho and/or what authored the section
                                            Control0..*
                                            TypeReference(Practitioner, PractitionerRole, Device, Patient, RelatedPerson, Organization)
                                            Is Modifierfalse
                                            Summaryfalse
                                            Requirements

                                            Identifies who is responsible for the content.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            220. Composition.section.focus
                                            Definition

                                            The actual focus of the section when it is not the subject of the composition, but instead represents something or someone associated with the subject such as (for a patient subject) a spouse, parent, fetus, or donor. If not focus is specified, the focus is assumed to be focus of the parent section, or, for a section in the Composition itself, the subject of the composition. Sections with a focus SHALL only include resources where the logical subject (patient, subject, focus, etc.) matches the section focus, or the resources have no logical subject (few resources).

                                            ShortWho/what the section is about, when it is not about the subject of composition
                                            Comments

                                            Typically, sections in a doument are about the subject of the document, whether that is a patient, or group of patients, location, or device, or whatever. For some kind of documents, some sections actually contain data about related entities. Typical examples are a section in a newborn discharge summary concerning the mother, or family history documents, with a section about each family member, though there are many other examples.

                                            Control0..1
                                            TypeReference(Resource)
                                            Is Modifierfalse
                                            Summaryfalse
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            222. Composition.section.text
                                            Definition

                                            A human-readable narrative that contains the attested content of the section, 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.

                                            ShortText summary of the section, for human interpretation
                                            Comments

                                            Document profiles may define what content should be represented in the narrative to ensure clinical safety.

                                            Control0..1
                                            This element is affected by the following invariants: cmp-1
                                            TypeNarrative
                                            Is Modifierfalse
                                            Must Supporttrue
                                            Summaryfalse
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            224. Composition.section.mode
                                            Definition

                                            How the entry list was prepared - whether it is a working list that is suitable for being maintained on an ongoing basis, or if it represents a snapshot of a list of items from another source, or whether it is a prepared list where items may be marked as added, modified or deleted.

                                            Shortworking | snapshot | changes
                                            Comments

                                            This element is labeled as a modifier because a change list must not be misunderstood as a complete list.

                                            Control0..1
                                            BindingThe codes SHALL be taken from ListMode
                                            (required to http://hl7.org/fhir/ValueSet/list-mode|4.0.1)

                                            The processing mode that applies to this section.

                                            Typecode
                                            Is Modifierfalse
                                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                                            Summaryfalse
                                            Requirements

                                            Sections are used in various ways, and it must be known in what way it is safe to use the entries in them.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            226. Composition.section.orderedBy
                                            Definition

                                            Specifies the order applied to the items in the section entries.

                                            ShortOrder of section entries
                                            Comments

                                            Applications SHOULD render ordered lists in the order provided, but MAY allow users to re-order based on their own preferences as well. If there is no order specified, the order is unknown, though there may still be some order.

                                            Control0..1
                                            BindingThe codes SHOULD be taken from ListOrderCodes
                                            (preferred to http://hl7.org/fhir/ValueSet/list-order|4.0.1)

                                            What order applies to the items in the entry.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Summaryfalse
                                            Requirements

                                            Important for presentation and rendering. Lists may be sorted to place more important information first or to group related entries.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            228. Composition.section.entry
                                            Definition

                                            A reference to the actual resource from which the narrative in the section is derived.

                                            ShortA reference to data that supports this section
                                            Comments

                                            If there are no entries in the list, an emptyReason SHOULD be provided.

                                            Control0..*
                                            This element is affected by the following invariants: cmp-2
                                            TypeReference(Resource)
                                            Is Modifierfalse
                                            Summaryfalse
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            230. Composition.section.emptyReason
                                            Definition

                                            If the section is empty, why the list is empty. An empty section typically has some text explaining the empty reason.

                                            ShortWhy the section is empty
                                            Comments

                                            The various reasons for an empty section make a significant interpretation to its interpretation. Note that this code is for use when the entire section content has been suppressed, and not for when individual items are omitted - implementers may consider using a text note or a flag on an entry in these cases.

                                            Control0..1
                                            This element is affected by the following invariants: cmp-2
                                            BindingThe codes SHOULD be taken from ListEmptyReasons
                                            (preferred to http://hl7.org/fhir/ValueSet/list-empty-reason|4.0.1)

                                            If a section is empty, why it is empty.

                                            TypeCodeableConcept
                                            Is Modifierfalse
                                            Summaryfalse
                                            Requirements

                                            Allows capturing things like "none exist" or "not asked" which can be important for most lists.

                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                                            232. Composition.section.section
                                            Definition

                                            A nested sub-section within this section.

                                            ShortNested Section
                                            Comments

                                            Nested sections are primarily used to help human readers navigate to particular portions of the document.

                                            Control0..*
                                            This element is affected by the following invariants: cmp-1
                                            TypeSeettp://hl7.org/fhir/StructureDefinition/Composition#Composition.section
                                            Is Modifierfalse
                                            Summaryfalse
                                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))