US Public Health Profiles Library
1.0.0 - STU1

US Public Health Profiles Library, published by HL7 Public Health Working Group. This is not an authorized publication; it is the continuous build for version 1.0.0). This version is based on the current content of https://github.com/HL7/fhir-us-ph-common-library-ig/ and changes regularly. See the Directory of published versions

## Resource Profile: USPublicHealthComposition - Detailed Descriptions

Active as of 2023-10-04

Definitions for the us-ph-composition resource profile.

- Differential Elements Table
- Key Elements Table
- Snapshot Elements Table

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

0. Composition
2. Composition.extension
Control | 1..?
Slicing | This element introduces a set of slices on `Composition.extension`. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators: value @ url
4. Composition.extension:extensionVersionNumber
Slice Name | extensionVersionNumber
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.
Short | Public Health Composition versionNumber
Control | 1..1
Type | Extension(versionNumber) (Extension Type: string)
Must Support | true
6. Composition.extension:extensionInformationRecipient
Slice Name | extensionInformationRecipient
Short | Information Recipient
Control | 0..*
Type | Extension(US Public Health Information Recipient Extension) (Extension Type: Reference(US Core Practitioner Profile, US Public Health PractitionerRole, US Public Health Organization))
Must Support | true
8. 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.
Short | Public Health Composition identifier
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..?
Must Support | true
10. Composition.status
Must Support | true
12. Composition.type
Short | Type of this public health report
Must Support | true
14. Composition.subject
Definition | The subject of this Composition is the patient.
Short | Patient
Control | 1..?
Type | Reference(US Public Health Patient)
Must Support | true
16. Composition.encounter
Definition | This Encounter profile represents the encounter related to the public health event.
Short | Encounter related to the public health event
Control | 1..?
Type | Reference(US Public Health Encounter)
Must Support | true
18. Composition.date
Must Support | true
20. 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.
Short | The author(s) of the document
Type | Reference(US Public Health PractitionerRole, US Core Practitioner Profile, US Public Health Organization, Device)
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
22. Composition.title
Must Support | true
24. Composition.custodian
Type | Reference(US Public Health Organization)
Must Support | true
26. Composition.relatesTo
Must Support | true
Slicing | This element introduces a set of slices on `Composition.relatesTo`. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators: value @ code
28. Composition.relatesTo:transformed
Slice Name | transformed
Definition | Document of Composition that this Composition is transformed from
Short | Document or Composition that this Composition is transformed from
Control | 0..1
Must Support | true
30. Composition.relatesTo:transformed.code
Must Support | true
Fixed Value | transforms
32. Composition.relatesTo:transformed.target[x]
Definition | Identifier of the Document or Composition transformed
Short | Identifier of the Document or Composition transformed
Type | Identifier
[x] Note | See Choice of Data Types for further information about how to use [x]
Must Support | true
34. Composition.relatesTo:replaced
Slice Name | replaced
Definition | Document or Composition that this Composition replaces
Short | Document or Composition that this Composition replaces
Control | 0..1
Must Support | true
36. Composition.relatesTo:replaced.code
Must Support | true
Fixed Value | replaces
38. Composition.relatesTo:replaced.target[x]
Definition | Identifier/Reference to the Document or Composition transformed
Short | Identifier/Reference to the Document or Composition transformed
[x] Note | See Choice of Data Types for further information about how to use [x]
Must Support | true

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

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.).
Short | A 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.
Control | 0..*
Is Modifier | false
Summary | false
Invariants | dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty()) dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()) dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()) dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty()) dom-6: A resource should have narrative for robust management (text.`div`.exists())
2. 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.
Short | A set of rules under which this content was created
Comments | Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
Control | 0..1
Type | uri
Is Modifier | true because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. 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.
Short | ExtensionAdditional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 10..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing | This element introduces a set of slices on `Composition.extension`. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators: value @ url
6. Composition.extension:extensionVersionNumber
Slice Name | extensionVersionNumber
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.
Short | Public Health Composition versionNumber
Comments | 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.
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(versionNumber) (Extension Type: string)
Is Modifier | false
Must Support | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
8. Composition.extension:extensionInformationRecipient
Slice Name | extensionInformationRecipient
Definition | An Extension
Short | Information Recipient
Control | 0..* This element is affected by the following invariants: ele-1
Type | Extension(US Public Health Information Recipient Extension) (Extension Type: Reference(US Core Practitioner Profile, US Public Health PractitionerRole, US Public Health Organization))
Is Modifier | false
Must Support | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
10. Composition.modifierExtension
Definition | May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions. Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Short | Extensions that cannot be ignored
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
12. 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.
Short | Public Health Composition identifierVersion-independent identifier for the Composition
Comments | Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate.
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 10..1
Type | Identifier
Is Modifier | false
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
14. Composition.status
Definition | The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document.
Short | preliminary | 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.
Control | 1..1
Binding | The codes SHALL be taken from CompositionStatus http://hl7.org/fhir/ValueSet/composition-status|4.0.1 The workflow/clinical status of the composition.
Type | code
Is Modifier | true 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 Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Requirements | Need to be able to mark interim, amended, or withdrawn compositions or documents.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. 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.
Short | Type 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.
Control | 1..1
Binding | The codes SHOULD be taken from FHIRDocumentTypeCodes http://hl7.org/fhir/ValueSet/doc-typecodes Type of a composition.
Type | CodeableConcept
Is Modifier | false
Must Support | true
Summary | true
Requirements | Key metadata element describing the composition, used in searching/filtering.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
18. 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).
Short | PatientWho and/or what the composition is about
Comments | For clinical documents, this is usually the patient.
Control | 10..1
Type | Reference(US Public Health Patient, Resource)
Is Modifier | false
Must Support | true
Summary | true
Requirements | Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
20. 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.
Short | Encounter related to the public health eventContext of the Composition
Control | 10..1
Type | Reference(US Public Health Encounter, Encounter)
Is Modifier | false
Must Support | true
Summary | true
Requirements | Provides context for the composition and supports searching.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. Composition.date
Definition | The composition editing time, when the composition was last logically changed by the author.
Short | Composition editing time
Comments | The Last Modified Date on the composition may be after the date of the document was attested without being changed.
Control | 1..1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
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.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
24. 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.
Short | The author(s) of the documentWho and/or what authored the composition
Control | 1..*
Type | Reference(US Public Health PractitionerRole, US Core Practitioner Profile, US Public Health Organization, Device, Practitioner, PractitionerRole, Patient, RelatedPerson, Organization)
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Summary | true
Requirements | Identifies who is responsible for the content.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
26. Composition.title
Definition | Official human-readable label for the composition.
Short | Human 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.
Control | 1..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
28. Composition.custodian
Definition | Identifies the organization or group who is responsible for ongoing maintenance of and access to the composition/document information.
Short | 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.
Control | 0..1
Type | Reference(US Public Health Organization, Organization)
Is Modifier | false
Must Support | true
Summary | true
Requirements | Identifies where to go to find the current version, where to report issues, etc.
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
30. Composition.relatesTo
Definition | Relationships that this composition has with other compositions or documents that already exist.
Short | Relationships to other compositions/documents
Comments | A document is a version specific composition.
Control | 0..*
Type | BackboneElement
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
Slicing | This element introduces a set of slices on `Composition.relatesTo`. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators: value @ code
32. 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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
34. Composition.relatesTo.code
Definition | The type of relationship that this composition has with anther composition or document.
Short | replaces | transforms | signs | appends
Comments | If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.
Control | 1..1
Binding | The codes SHALL be taken from DocumentRelationshipType http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1 The type of relationship between documents.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
36. Composition.relatesTo.target[x]
Definition | The target composition/document of this relationship.
Short | Target of the relationship
Control | 1..1
Type | Choice of: Identifier, Reference(Composition)
[x] Note | See Choice of Data Types for further information about how to use [x]
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. Composition.relatesTo:transformed
Slice Name | transformed
Definition | Document of Composition that this Composition is transformed from Relationships that this composition has with other compositions or documents that already exist.
Short | Document or Composition that this Composition is transformed fromRelationships to other compositions/documents
Comments | A document is a version specific composition.
Control | 0..1*
Type | BackboneElement
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
40. 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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
42. Composition.relatesTo:transformed.code
Definition | The type of relationship that this composition has with anther composition or document.
Short | replaces | transforms | signs | appends
Comments | If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.
Control | 1..1
Binding | The codes SHALL be taken from DocumentRelationshipType http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1 The type of relationship between documents.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | false
Fixed Value | transforms
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. Composition.relatesTo:transformed.target[x]
Definition | Identifier of the Document or Composition transformed The target composition/document of this relationship.
Short | Identifier of the Document or Composition transformedTarget of the relationship
Control | 1..1
Type | Identifier, Reference(Composition)
[x] Note | See Choice of Data Types for further information about how to use [x]
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
46. Composition.relatesTo:replaced
Slice Name | replaced
Definition | Document or Composition that this Composition replaces Relationships that this composition has with other compositions or documents that already exist.
Short | Document or Composition that this Composition replacesRelationships to other compositions/documents
Comments | A document is a version specific composition.
Control | 0..1*
Type | BackboneElement
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
48. Composition.relatesTo:replaced.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).
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
50. Composition.relatesTo:replaced.code
Definition | The type of relationship that this composition has with anther composition or document.
Short | replaces | transforms | signs | appends
Comments | If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.
Control | 1..1
Binding | The codes SHALL be taken from DocumentRelationshipType http://hl7.org/fhir/ValueSet/document-relationship-type|4.0.1 The type of relationship between documents.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | false
Fixed Value | replaces
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
52. Composition.relatesTo:replaced.target[x]
Definition | Identifier/Reference to the Document or Composition transformed The target composition/document of this relationship.
Short | Identifier/Reference to the Document or Composition transformedTarget of the relationship
Control | 1..1
Type | Choice of: Identifier, Reference(Composition)
[x] Note | See Choice of Data Types for further information about how to use [x]
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

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

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.).
Short | A 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.
Control | 0..*
Is Modifier | false
Summary | false
Invariants | dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (`contained.contained.empty()`) dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (`contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()`) dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (`contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()`) dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (`contained.meta.security.empty()`) dom-6: A resource should have narrative for robust management (`text.`div`.exists()`)
2. Composition.id
Definition | The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Short | Logical id of this artifact
Comments | The only time that a resource does not have an id is when it is being submitted to the server using a create operation.
Control | 0..1
Type | id
Is Modifier | false
Summary | true
4. 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.
Short | Metadata about the resource
Control | 0..1
Type | Meta
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
6. 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.
Short | A set of rules under which this content was created
Comments | Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.
Control | 0..1
Type | uri
Is Modifier | true because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
8. Composition.language
Definition | The base language in which the resource is written.
Short | Language of the resource content
Comments | Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).
Control | 0..1
Binding | The codes SHOULD be taken from CommonLanguages: A human language.
Additional Bindings | Purpose
AllLanguages | Max Binding
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
10. 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.
Short | Text summary of the resource, for human interpretation
Comments | Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later.
Control | 0..1
Type | Narrative
Is Modifier | false
Summary | false
Alternate Names | narrative, html, xhtml, display
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
12. 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.
Short | Contained, inline Resources
Comments | This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.
Control | 0..*
Type | Resource
Is Modifier | false
Summary | false
Alternate Names | inline resources, anonymous resources, contained resources
14. Composition.extension
Definition | An Extension
Short | Extension
Control | 1..*
Type | Extension
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing | This element introduces a set of slices on `Composition.extension`. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators: value @ url
16. Composition.extension:extensionVersionNumber
Slice Name | extensionVersionNumber
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.
Short | Public Health Composition versionNumber
Comments | 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.
Control | 1..1 This element is affected by the following invariants: ele-1
Type | Extension(versionNumber) (Extension Type: string)
Is Modifier | false
Must Support | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
18. Composition.extension:extensionInformationRecipient
Slice Name | extensionInformationRecipient
Definition | An Extension
Short | Information Recipient
Control | 0..* This element is affected by the following invariants: ele-1
Type | Extension(US Public Health Information Recipient Extension) (Extension Type: Reference(US Core Practitioner Profile, US Public Health PractitionerRole, US Public Health Organization))
Is Modifier | false
Must Support | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
20. Composition.modifierExtension
Definition | May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.
Short | Extensions that cannot be ignored
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
Summary | false
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
22. 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.
Short | Public Health Composition identifier
Comments | Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate.
Note | This is a business identifier, not a resource identifier (see discussion)
Control | 1..1
Type | Identifier
Is Modifier | false
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
24. Composition.status
Definition | The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document.
Short | preliminary | 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.
Control | 1..1
Binding | The codes SHALL be taken from CompositionStatus: The workflow/clinical status of the composition.
Type | code
Is Modifier | true 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 Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Requirements | Need to be able to mark interim, amended, or withdrawn compositions or documents.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
26. 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.
Short | Type 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.
Control | 1..1
Binding | The codes SHOULD be taken from FHIRDocumentTypeCodes: Type of a composition.
Type | CodeableConcept
Is Modifier | false
Must Support | true
Summary | true
Requirements | Key metadata element describing the composition, used in searching/filtering.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
28. 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.
Short | Categorization of Composition
Comments | This is a metadata field from XDS/MHD.
Control | 0..*
Binding | For example codes, see DocumentClassValueSet: High-level kind of a clinical document at a macro level.
Type | CodeableConcept
Is Modifier | false
Summary | true
Requirements | Helps humans to assess whether the composition is of interest when viewing an index of compositions or documents.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
30. Composition.subject
Definition | The subject of this Composition is the patient.
Short | Patient
Comments | For clinical documents, this is usually the patient.
Control | 1..1
Type | Reference(US Public Health Patient)
Is Modifier | false
Must Support | true
Summary | true
Requirements | Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
32. Composition.encounter
Definition | This Encounter profile represents the encounter related to the public health event.
Short | Encounter related to the public health event
Control | 1..1
Type | Reference(US Public Health Encounter)
Is Modifier | false
Must Support | true
Summary | true
Requirements | Provides context for the composition and supports searching.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
34. Composition.date
Definition | The composition editing time, when the composition was last logically changed by the author.
Short | Composition editing time
Comments | The Last Modified Date on the composition may be after the date of the document was attested without being changed.
Control | 1..1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
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.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
36. 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.
Short | The author(s) of the document
Control | 1..*
Type | Reference(US Public Health PractitionerRole, US Core Practitioner Profile, US Public Health Organization, Device)
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Summary | true
Requirements | Identifies who is responsible for the content.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
38. Composition.title
Definition | Official human-readable label for the composition.
Short | Human 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.
Control | 1..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
40. Composition.confidentiality
Definition | The code specifying the level of confidentiality of the Composition.
Short | As 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.
Control | 0..1
Binding | The codes SHALL be taken from v3.ConfidentialityClassification (2014-03-26): Codes specifying the level of confidentiality of the composition.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
42. Composition.attester
Definition | A participant who has attested to the accuracy of the composition/document.
Short | Attests to accuracy of composition
Comments | Only list each attester once.
Control | 0..*
Type | BackboneElement
Is Modifier | false
Summary | false
Requirements | Identifies responsibility for the accuracy of the composition content.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
44. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
46. 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.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
48. 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.
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
50. Composition.attester.mode
Definition | The type of attestation the authenticator offers.
Short | personal | professional | legal | official
Control | 1..1
Binding | The codes SHALL be taken from CompositionAttestationMode: The way in which a person authenticated a composition.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Requirements | Indicates the level of authority of the attestation.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
52. Composition.attester.time
Definition | When the composition was attested by the party.
Short | When the composition was attested
Control | 0..1
Type | dateTime
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Requirements | Identifies when the information in the composition was deemed accurate. (Things may have changed since then.).
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
54. Composition.attester.party
Definition | Who attested the composition in the specified way.
Short | Who attested the composition
Control | 0..1
Type | Reference(Patient, RelatedPerson, Practitioner, PractitionerRole, Organization)
Is Modifier | false
Summary | false
Requirements | Identifies who has taken on the responsibility for accuracy of the composition content.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
56. Composition.custodian
Definition | Identifies the organization or group who is responsible for ongoing maintenance of and access to the composition/document information.
Short | 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.
Control | 0..1
Type | Reference(US Public Health Organization)
Is Modifier | false
Must Support | true
Summary | true
Requirements | Identifies where to go to find the current version, where to report issues, etc.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
58. Composition.relatesTo
Definition | Relationships that this composition has with other compositions or documents that already exist.
Short | Relationships to other compositions/documents
Comments | A document is a version specific composition.
Control | 0..*
Type | BackboneElement
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
Slicing | This element introduces a set of slices on `Composition.relatesTo`. The slices are unordered and Open, and can be differentiated using the following discriminators: , and can be differentiated using the following discriminators: value @ code
60. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
62. 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.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
64. 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.
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
66. Composition.relatesTo.code
Definition | The type of relationship that this composition has with anther composition or document.
Short | replaces | transforms | signs | appends
Comments | If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.
Control | 1..1
Binding | The codes SHALL be taken from DocumentRelationshipType: The type of relationship between documents.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
68. Composition.relatesTo.target[x]
Definition | The target composition/document of this relationship.
Short | Target of the relationship
Control | 1..1
Type | Choice of: Identifier, Reference(Composition)
[x] Note | See Choice of Data Types for further information about how to use [x]
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
70. Composition.relatesTo:transformed
Slice Name | transformed
Definition | Document of Composition that this Composition is transformed from
Short | Document or Composition that this Composition is transformed from
Comments | A document is a version specific composition.
Control | 0..1
Type | BackboneElement
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
72. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
74. 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.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
76. 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.
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
78. Composition.relatesTo:transformed.code
Definition | The type of relationship that this composition has with anther composition or document.
Short | replaces | transforms | signs | appends
Comments | If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.
Control | 1..1
Binding | The codes SHALL be taken from DocumentRelationshipType: The type of relationship between documents.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | false
Fixed Value | transforms
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
80. Composition.relatesTo:transformed.target[x]
Definition | Identifier of the Document or Composition transformed
Short | Identifier of the Document or Composition transformed
Control | 1..1
Type | Identifier
[x] Note | See Choice of Data Types for further information about how to use [x]
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
82. Composition.relatesTo:replaced
Slice Name | replaced
Definition | Document or Composition that this Composition replaces
Short | Document or Composition that this Composition replaces
Comments | A document is a version specific composition.
Control | 0..1
Type | BackboneElement
Is Modifier | false
Must Support | true
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
84. Composition.relatesTo:replaced.id
Definition | Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
86. Composition.relatesTo:replaced.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.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
88. Composition.relatesTo:replaced.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.
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
90. Composition.relatesTo:replaced.code
Definition | The type of relationship that this composition has with anther composition or document.
Short | replaces | transforms | signs | appends
Comments | If this document appends another document, then the document cannot be fully understood without also accessing the referenced document.
Control | 1..1
Binding | The codes SHALL be taken from DocumentRelationshipType: The type of relationship between documents.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Must Support | true
Summary | false
Fixed Value | replaces
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
92. Composition.relatesTo:replaced.target[x]
Definition | Identifier/Reference to the Document or Composition transformed
Short | Identifier/Reference to the Document or Composition transformed
Control | 1..1
Type | Choice of: Identifier, Reference(Composition)
[x] Note | See Choice of Data Types for further information about how to use [x]
Is Modifier | false
Must Support | true
Must Support Types | No must-support rules about the choice of types/profiles
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
94. Composition.event
Definition | The clinical service, such as a colonoscopy or an appendectomy, being documented.
Short | The clinical service(s) being documented
Comments | The event needs to be consistent with the type element, though can provide further information if desired.
Control | 0..*
Type | BackboneElement
Is Modifier | false
Summary | true
Requirements | Provides context for the composition and creates a linkage between a resource describing an event and the composition created describing the event.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
96. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
98. 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.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
100. 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.
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
102. 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.
Short | Code(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.
Control | 0..*
Binding | For example codes, see v3 Code System ActCode: This list of codes represents the main clinical acts being documented.
Type | CodeableConcept
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
104. 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.
Short | The period covered by the documentation
Control | 0..1
Type | Period
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
106. 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.
Short | The event(s) being documented
Control | 0..*
Type | Reference(Resource)
Is Modifier | false
Summary | true
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
108. Composition.section
Definition | The root of the sections that make up the composition.
Short | Composition is broken into sections
Control | 0..*
Type | BackboneElement
Is Modifier | false
Summary | false
Invariants | 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()`) ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
110. 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.
Short | Unique id for inter-element referencing
Control | 0..1
Type | string
Is Modifier | false
XML Format | In the XML format, this property is represented as an attribute.
Summary | false
112. Composition.section.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.
Short | Additional content defined by implementations
Comments | There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control | 0..*
Type | Extension
Is Modifier | false
Summary | false
Alternate Names | extensions, user content
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
114. 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.
Short | Extensions 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.
Control | 0..*
Type | Extension
Is Modifier | true because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
Summary | true
Requirements | Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.
Alternate Names | extensions, user content, modifiers
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
116. 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.
Short | Label 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.
Control | 0..1
Type | string
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Requirements | Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.
Alternate Names | header, label, caption
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
118. Composition.section.code
Definition | A code identifying the kind of content contained within the section. This must be consistent with the section title.
Short | Classification 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.
Control | 0..1
Binding | For example codes, see DocumentSectionCodes: Classification of a section of a composition/document.
Type | CodeableConcept
Is Modifier | false
Summary | false
Requirements | Provides computable standardized labels to topics within the document.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
120. Composition.section.author
Definition | Identifies who is responsible for the information in this section, not necessarily who typed it in.
Short | Who and/or what authored the section
Control | 0..*
Type | Reference(Practitioner, PractitionerRole, Device, Patient, RelatedPerson, Organization)
Is Modifier | false
Summary | false
Requirements | Identifies who is responsible for the content.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
122. 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).
Short | Who/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.
Control | 0..1
Type | Reference(Resource)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
124. 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.
Short | Text summary of the section, for human interpretation
Comments | Document profiles may define what content should be represented in the narrative to ensure clinical safety.
Control | 0..1 This element is affected by the following invariants: cmp-1
Type | Narrative
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
126. 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.
Short | working | snapshot | changes
Comments | This element is labeled as a modifier because a change list must not be misunderstood as a complete list.
Control | 0..1
Binding | The codes SHALL be taken from ListMode: The processing mode that applies to this section.
Type | code
Is Modifier | false
Primitive Value | This primitive element may be present, or absent, or replaced by an extension
Summary | false
Requirements | Sections are used in various ways, and it must be known in what way it is safe to use the entries in them.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
128. Composition.section.orderedBy
Definition | Specifies the order applied to the items in the section entries.
Short | Order 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.
Control | 0..1
Binding | The codes SHOULD be taken from ListOrderCodes: What order applies to the items in the entry.
Type | CodeableConcept
Is Modifier | false
Summary | false
Requirements | Important for presentation and rendering. Lists may be sorted to place more important information first or to group related entries.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
130. Composition.section.entry
Definition | A reference to the actual resource from which the narrative in the section is derived.
Short | A reference to data that supports this section
Comments | If there are no entries in the list, an emptyReason SHOULD be provided.
Control | 0..* This element is affected by the following invariants: cmp-2
Type | Reference(Resource)
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
132. 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.
Short | Why 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.
Control | 0..1 This element is affected by the following invariants: cmp-2
Binding | The codes SHOULD be taken from ListEmptyReasons: If a section is empty, why it is empty.
Type | CodeableConcept
Is Modifier | false
Summary | false
Requirements | Allows capturing things like "none exist" or "not asked" which can be important for most lists.
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
134. Composition.section.section
Definition | A nested sub-section within this section.
Short | Nested Section
Comments | Nested sections are primarily used to help human readers navigate to particular portions of the document.
Control | 0..* This element is affected by the following invariants: cmp-1
Type | See ttp://hl7.org/fhir/StructureDefinition/Composition#Composition.section
Is Modifier | false
Summary | false
Invariants | ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)