Using CQL with FHIR
1.1.0-cibuild - CIBuild International flag

Using CQL with FHIR, published by HL7 International / Clinical Decision Support. This guide is not an authorized publication; it is the continuous build for version 1.1.0-cibuild built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/cql-ig/ and changes regularly. See the Directory of published versions

Resource Profile: CQL Module

Official URL: http://hl7.org/fhir/uv/cql/StructureDefinition/cql-module Version: 1.1.0-cibuild
Standards status: Trial-use Maturity Level: 3 Computable Name: CQLModule
Other Identifiers: OID:2.16.840.1.113883.4.642.40.37.42.12

The CQL Module profile describes the elements used to provide a structured representation of the declarations and data requirements of a logic library or operation

Usage:

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

This structure is derived from Library

NameFlagsCard.TypeDescription & Constraintsdoco
.. Library 0..* Library Represents a library of quality improvement components
... Slices for extension Content/Rules for all slices
.... directReferenceCode S 0..* Coding A code directly referenced by the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode
.... logicDefinition S 0..* (Complex) A logic definition used in the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition
.... inputParameters S 0..1 Reference(Parameters) The cqf-inputParameters extension is used to provide the actual parameters given to an operation (i.e. when the module is the result of a $data-requirements operation, what were the parameters to the operation). As opposed to the Library.parameter element, which provides the definition of parameters for the module.
URL: http://hl7.org/fhir/StructureDefinition/cqf-inputParameters
... type S 1..1 CodeableConcept logic-library | model-definition | asset-collection | module-definition
... subject[x] S 0..1 CodeableConcept, Reference(Group) Type of individual the library content is focused on
.... relatedArtifact:dependency SC 0..* RelatedArtifact What dependencies are referenced
mnf-2: Dependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
..... Slices for extension Content/Rules for all slices
...... resourceReference SC 0..1 Reference(Resource) A reference to the dependency artifact (for canonical promotions)
URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference
..... type S 1..1 code documentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
Fixed Value: depends-on
..... display S 0..1 string Brief description of the related artifact
..... resource SC 0..1 canonical(Resource) A reference to the dependency artifact (for canonical resources)
... parameter S 0..* ParameterDefinition Provides the definition of parameters for the module.
.... Slices for extension Content/Rules for all slices
..... defaultValue S 0..1 string, boolean, integer, decimal, date, dateTime, Coding, CodeableConcept, Period, Range, Quantity, Ratio cqf-defaultValue is used if the parameter definition has a default to provide the expected value of the default. Note that the value is provided according to the FHIR Type Mapping
URL: http://hl7.org/fhir/StructureDefinition/cqf-defaultValue
..... cqlType 0..1 string cqf-cqlType is used to ensure that the type of the parameter can be unambiguously provided, given that the FHIR Type Mapping is potentially ambiguous (for the Period type specifically)
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlType
..... cqlAccessModifier 0..1 code What CQL access modifier
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlAccessModifier
Binding: CQL Access Modifier (required): The access modifier of the element

... dataRequirement S 0..* DataRequirement What data is referenced by this library
.... Slices for extension Content/Rules for all slices
..... isSelective S 0..1 boolean specifies whether a given DataRequirement is "selective"
URL: http://hl7.org/fhir/StructureDefinition/cqf-isSelective
..... valueFilter S 0..* (Complex) Extension
URL: http://hl7.org/fhir/StructureDefinition/cqf-valueFilter
..... fhirQueryPattern 0..* string What FHIR query?
URL: http://hl7.org/fhir/StructureDefinition/cqf-fhirQueryPattern

doco Documentation for this format

Constraints

IdGradePath(s)DetailsRequirements
mnf-2errorLibrary.relatedArtifact:dependencyDependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
: resource.exists() xor extension('http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference').exists()
NameFlagsCard.TypeDescription & Constraintsdoco
.. Library C 0..* Library Represents a library of quality improvement components
lib-0: Name should be usable as an identifier for the module by machine processing applications such as code generation
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... Slices for extension Content/Rules for all slices
.... directReferenceCode S 0..* Coding A code directly referenced by the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode
.... logicDefinition S 0..* (Complex) A logic definition used in the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition
.... inputParameters S 0..1 Reference(Parameters) The cqf-inputParameters extension is used to provide the actual parameters given to an operation (i.e. when the module is the result of a $data-requirements operation, what were the parameters to the operation). As opposed to the Library.parameter element, which provides the definition of parameters for the module.
URL: http://hl7.org/fhir/StructureDefinition/cqf-inputParameters
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... type SΣ 1..1 CodeableConcept logic-library | model-definition | asset-collection | module-definition
Binding: LibraryType (extensible): The type of knowledge asset this library contains.

... subject[x] S 0..1 Type of individual the library content is focused on
Binding: SubjectType (extensible): The possible types of subjects for a library (E.g. Patient, Practitioner, Organization, Location, etc.).

.... subjectCodeableConcept CodeableConcept
.... subjectReference Reference(Group)
... Slices for relatedArtifact S 0..* RelatedArtifact Dependencies used by the artifact
Slice: Unordered, Open by value:type
.... relatedArtifact:dependency SC 0..* RelatedArtifact What dependencies are referenced
mnf-2: Dependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
..... Slices for extension Content/Rules for all slices
...... resourceReference SC 0..1 Reference(Resource) A reference to the dependency artifact (for canonical promotions)
URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference
..... type SΣ 1..1 code documentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
Binding: RelatedArtifactType (required): The type of relationship to the related artifact.


Fixed Value: depends-on
..... display SΣ 0..1 string Brief description of the related artifact
..... resource SΣC 0..1 canonical(Resource) A reference to the dependency artifact (for canonical resources)
... parameter S 0..* ParameterDefinition Provides the definition of parameters for the module.
.... Slices for extension Content/Rules for all slices
..... defaultValue S 0..1 string, boolean, integer, decimal, date, dateTime, Coding, CodeableConcept, Period, Range, Quantity, Ratio cqf-defaultValue is used if the parameter definition has a default to provide the expected value of the default. Note that the value is provided according to the FHIR Type Mapping
URL: http://hl7.org/fhir/StructureDefinition/cqf-defaultValue
..... cqlType 0..1 string cqf-cqlType is used to ensure that the type of the parameter can be unambiguously provided, given that the FHIR Type Mapping is potentially ambiguous (for the Period type specifically)
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlType
..... cqlAccessModifier 0..1 code What CQL access modifier
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlAccessModifier
Binding: CQL Access Modifier (required): The access modifier of the element


.... use Σ 1..1 code in | out
Binding: OperationParameterUse (required): Whether the parameter is input or output.

.... type Σ 1..1 code What type of value
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.

... dataRequirement S 0..* DataRequirement What data is referenced by this library
.... Slices for extension Content/Rules for all slices
..... isSelective S 0..1 boolean specifies whether a given DataRequirement is "selective"
URL: http://hl7.org/fhir/StructureDefinition/cqf-isSelective
..... valueFilter S 0..* (Complex) Extension
URL: http://hl7.org/fhir/StructureDefinition/cqf-valueFilter
..... fhirQueryPattern 0..* string What FHIR query?
URL: http://hl7.org/fhir/StructureDefinition/cqf-fhirQueryPattern
.... type Σ 1..1 code The type of the required data
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.


doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Library.statusrequiredPublicationStatus
http://hl7.org/fhir/ValueSet/publication-status|4.0.1
from the FHIR Standard
Library.typeextensibleLibraryType
http://hl7.org/fhir/ValueSet/library-type
from the FHIR Standard
Library.subject[x]extensibleSubjectType
http://hl7.org/fhir/ValueSet/subject-type
from the FHIR Standard
Library.relatedArtifact:dependency.typerequiredFixed Value: depends-on
http://hl7.org/fhir/ValueSet/related-artifact-type|4.0.1
from the FHIR Standard
Library.parameter.userequiredOperationParameterUse
http://hl7.org/fhir/ValueSet/operation-parameter-use|4.0.1
from the FHIR Standard
Library.parameter.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard
Library.dataRequirement.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
dom-2errorLibraryIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3errorLibraryIf 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-4errorLibraryIf 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-5errorLibraryIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6best practiceLibraryA resource should have narrative for robust management
: text.`div`.exists()
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
lib-0warningLibraryName should be usable as an identifier for the module by machine processing applications such as code generation
: name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
mnf-2errorLibrary.relatedArtifact:dependencyDependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
: resource.exists() xor extension('http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference').exists()
NameFlagsCard.TypeDescription & Constraintsdoco
.. Library C 0..* Library Represents a library of quality improvement components
lib-0: Name should be usable as an identifier for the module by machine processing applications such as code generation
... id Σ 0..1 id Logical id of this artifact
... meta Σ 0..1 Meta Metadata about the resource
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... language 0..1 code Language of the resource content
Binding: CommonLanguages (preferred): A human language.

Additional BindingsPurpose
AllLanguages Max Binding
... text 0..1 Narrative Text summary of the resource, for human interpretation
... contained 0..* Resource Contained, inline Resources
... Slices for extension 0..* Extension Extension
Slice: Unordered, Open by value:url
.... directReferenceCode S 0..* Coding A code directly referenced by the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode
.... logicDefinition S 0..* (Complex) A logic definition used in the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition
.... inputParameters S 0..1 Reference(Parameters) The cqf-inputParameters extension is used to provide the actual parameters given to an operation (i.e. when the module is the result of a $data-requirements operation, what were the parameters to the operation). As opposed to the Library.parameter element, which provides the definition of parameters for the module.
URL: http://hl7.org/fhir/StructureDefinition/cqf-inputParameters
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... url Σ 0..1 uri Canonical identifier for this library, represented as a URI (globally unique)
... identifier Σ 0..* Identifier Additional identifier for the library
... version Σ 0..1 string Business version of the library
... name ΣC 0..1 string Name for this library (computer friendly)
... title Σ 0..1 string Name for this library (human friendly)
... subtitle 0..1 string Subordinate title of the library
... status ?!Σ 1..1 code draft | active | retired | unknown
Binding: PublicationStatus (required): The lifecycle status of an artifact.

... experimental Σ 0..1 boolean For testing purposes, not real usage
... type SΣ 1..1 CodeableConcept logic-library | model-definition | asset-collection | module-definition
Binding: LibraryType (extensible): The type of knowledge asset this library contains.

... subject[x] S 0..1 Type of individual the library content is focused on
Binding: SubjectType (extensible): The possible types of subjects for a library (E.g. Patient, Practitioner, Organization, Location, etc.).

.... subjectCodeableConcept CodeableConcept
.... subjectReference Reference(Group)
... date Σ 0..1 dateTime Date last changed
... publisher Σ 0..1 string Name of the publisher (organization or individual)
... contact Σ 0..* ContactDetail Contact details for the publisher
... description Σ 0..1 markdown Natural language description of the library
... useContext Σ 0..* UsageContext The context that the content is intended to support
... jurisdiction Σ 0..* CodeableConcept Intended jurisdiction for library (if applicable)
Binding: Jurisdiction ValueSet (extensible): Countries and regions within which this artifact is targeted for use.


... purpose 0..1 markdown Why this library is defined
... usage 0..1 string Describes the clinical usage of the library
... copyright 0..1 markdown Use and/or publishing restrictions
... approvalDate 0..1 date When the library was approved by publisher
... lastReviewDate 0..1 date When the library was last reviewed
... effectivePeriod Σ 0..1 Period When the library is expected to be used
... topic 0..* CodeableConcept E.g. Education, Treatment, Assessment, etc.
Binding: DefinitionTopic (example): High-level categorization of the definition, used for searching, sorting, and filtering.


... author 0..* ContactDetail Who authored the content
... editor 0..* ContactDetail Who edited the content
... reviewer 0..* ContactDetail Who reviewed the content
... endorser 0..* ContactDetail Who endorsed the content
... Slices for relatedArtifact S 0..* RelatedArtifact Dependencies used by the artifact
Slice: Unordered, Open by value:type
.... relatedArtifact:dependency SC 0..* RelatedArtifact What dependencies are referenced
mnf-2: Dependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
..... id 0..1 string Unique id for inter-element referencing
..... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
...... resourceReference SC 0..1 Reference(Resource) A reference to the dependency artifact (for canonical promotions)
URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference
..... type SΣ 1..1 code documentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
Binding: RelatedArtifactType (required): The type of relationship to the related artifact.


Fixed Value: depends-on
..... label Σ 0..1 string Short label
..... display SΣ 0..1 string Brief description of the related artifact
..... citation Σ 0..1 markdown Bibliographic citation for the artifact
..... url Σ 0..1 url Where the artifact can be accessed
..... document Σ 0..1 Attachment What document is being referenced
..... resource SΣC 0..1 canonical(Resource) A reference to the dependency artifact (for canonical resources)
... parameter S 0..* ParameterDefinition Provides the definition of parameters for the module.
.... id 0..1 string Unique id for inter-element referencing
.... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... defaultValue S 0..1 string, boolean, integer, decimal, date, dateTime, Coding, CodeableConcept, Period, Range, Quantity, Ratio cqf-defaultValue is used if the parameter definition has a default to provide the expected value of the default. Note that the value is provided according to the FHIR Type Mapping
URL: http://hl7.org/fhir/StructureDefinition/cqf-defaultValue
..... cqlType 0..1 string cqf-cqlType is used to ensure that the type of the parameter can be unambiguously provided, given that the FHIR Type Mapping is potentially ambiguous (for the Period type specifically)
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlType
..... cqlAccessModifier 0..1 code What CQL access modifier
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlAccessModifier
Binding: CQL Access Modifier (required): The access modifier of the element


.... name Σ 0..1 code Name used to access the parameter value
.... use Σ 1..1 code in | out
Binding: OperationParameterUse (required): Whether the parameter is input or output.

.... min Σ 0..1 integer Minimum cardinality
.... max Σ 0..1 string Maximum cardinality (a number of *)
.... documentation Σ 0..1 string A brief description of the parameter
.... type Σ 1..1 code What type of value
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.

.... profile Σ 0..1 canonical(StructureDefinition) What profile the value is expected to be
... dataRequirement S 0..* DataRequirement What data is referenced by this library
.... id 0..1 string Unique id for inter-element referencing
.... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... isSelective S 0..1 boolean specifies whether a given DataRequirement is "selective"
URL: http://hl7.org/fhir/StructureDefinition/cqf-isSelective
..... valueFilter S 0..* (Complex) Extension
URL: http://hl7.org/fhir/StructureDefinition/cqf-valueFilter
..... fhirQueryPattern 0..* string What FHIR query?
URL: http://hl7.org/fhir/StructureDefinition/cqf-fhirQueryPattern
.... type Σ 1..1 code The type of the required data
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.

.... profile Σ 0..* canonical(StructureDefinition) The profile of the required data
.... subject[x] Σ 0..1 E.g. Patient, Practitioner, RelatedPerson, Organization, Location, Device
Binding: SubjectType (extensible): The possible types of subjects for a data requirement (E.g., Patient, Practitioner, Organization, Location, etc.).

..... subjectCodeableConcept CodeableConcept
..... subjectReference Reference(Group)
.... mustSupport Σ 0..* string Indicates specific structure elements that are referenced by the knowledge module
.... codeFilter ΣC 0..* Element What codes are expected
drq-1: Either a path or a searchParam must be provided, but not both
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... path Σ 0..1 string A code-valued attribute to filter on
..... searchParam Σ 0..1 string A coded (token) parameter to search on
..... valueSet Σ 0..1 canonical(ValueSet) Valueset for the filter
..... code Σ 0..* Coding What code is expected
.... dateFilter ΣC 0..* Element What dates/date ranges are expected
drq-2: Either a path or a searchParam must be provided, but not both
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... path Σ 0..1 string A date-valued attribute to filter on
..... searchParam Σ 0..1 string A date valued parameter to search on
..... value[x] Σ 0..1 The value of the filter, as a Period, DateTime, or Duration value
...... valueDateTime dateTime
...... valuePeriod Period
...... valueDuration Duration
.... limit Σ 0..1 positiveInt Number of results
.... sort Σ 0..* Element Order of the results
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... path Σ 1..1 string The name of the attribute to perform the sort
..... direction Σ 1..1 code ascending | descending
Binding: SortDirection (required): The possible sort directions, ascending or descending.

... content Σ 0..* Attachment Contents of the library, either embedded or referenced

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Library.languagepreferredCommonLanguages
Additional Bindings Purpose
AllLanguages Max Binding
http://hl7.org/fhir/ValueSet/languages
from the FHIR Standard
Library.statusrequiredPublicationStatus
http://hl7.org/fhir/ValueSet/publication-status|4.0.1
from the FHIR Standard
Library.typeextensibleLibraryType
http://hl7.org/fhir/ValueSet/library-type
from the FHIR Standard
Library.subject[x]extensibleSubjectType
http://hl7.org/fhir/ValueSet/subject-type
from the FHIR Standard
Library.jurisdictionextensibleJurisdiction ValueSet
http://hl7.org/fhir/ValueSet/jurisdiction
from the FHIR Standard
Library.topicexampleDefinitionTopic
http://hl7.org/fhir/ValueSet/definition-topic
from the FHIR Standard
Library.relatedArtifact:dependency.typerequiredFixed Value: depends-on
http://hl7.org/fhir/ValueSet/related-artifact-type|4.0.1
from the FHIR Standard
Library.parameter.userequiredOperationParameterUse
http://hl7.org/fhir/ValueSet/operation-parameter-use|4.0.1
from the FHIR Standard
Library.parameter.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard
Library.dataRequirement.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard
Library.dataRequirement.subject[x]extensibleSubjectType
http://hl7.org/fhir/ValueSet/subject-type
from the FHIR Standard
Library.dataRequirement.sort.directionrequiredSortDirection
http://hl7.org/fhir/ValueSet/sort-direction|4.0.1
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
dom-2errorLibraryIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3errorLibraryIf 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-4errorLibraryIf 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-5errorLibraryIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6best practiceLibraryA resource should have narrative for robust management
: text.`div`.exists()
drq-1errorLibrary.dataRequirement.codeFilterEither a path or a searchParam must be provided, but not both
: path.exists() xor searchParam.exists()
drq-2errorLibrary.dataRequirement.dateFilterEither a path or a searchParam must be provided, but not both
: path.exists() xor searchParam.exists()
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
lib-0warningLibraryName should be usable as an identifier for the module by machine processing applications such as code generation
: name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
mnf-2errorLibrary.relatedArtifact:dependencyDependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
: resource.exists() xor extension('http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference').exists()

Differential View

This structure is derived from Library

NameFlagsCard.TypeDescription & Constraintsdoco
.. Library 0..* Library Represents a library of quality improvement components
... Slices for extension Content/Rules for all slices
.... directReferenceCode S 0..* Coding A code directly referenced by the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode
.... logicDefinition S 0..* (Complex) A logic definition used in the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition
.... inputParameters S 0..1 Reference(Parameters) The cqf-inputParameters extension is used to provide the actual parameters given to an operation (i.e. when the module is the result of a $data-requirements operation, what were the parameters to the operation). As opposed to the Library.parameter element, which provides the definition of parameters for the module.
URL: http://hl7.org/fhir/StructureDefinition/cqf-inputParameters
... type S 1..1 CodeableConcept logic-library | model-definition | asset-collection | module-definition
... subject[x] S 0..1 CodeableConcept, Reference(Group) Type of individual the library content is focused on
.... relatedArtifact:dependency SC 0..* RelatedArtifact What dependencies are referenced
mnf-2: Dependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
..... Slices for extension Content/Rules for all slices
...... resourceReference SC 0..1 Reference(Resource) A reference to the dependency artifact (for canonical promotions)
URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference
..... type S 1..1 code documentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
Fixed Value: depends-on
..... display S 0..1 string Brief description of the related artifact
..... resource SC 0..1 canonical(Resource) A reference to the dependency artifact (for canonical resources)
... parameter S 0..* ParameterDefinition Provides the definition of parameters for the module.
.... Slices for extension Content/Rules for all slices
..... defaultValue S 0..1 string, boolean, integer, decimal, date, dateTime, Coding, CodeableConcept, Period, Range, Quantity, Ratio cqf-defaultValue is used if the parameter definition has a default to provide the expected value of the default. Note that the value is provided according to the FHIR Type Mapping
URL: http://hl7.org/fhir/StructureDefinition/cqf-defaultValue
..... cqlType 0..1 string cqf-cqlType is used to ensure that the type of the parameter can be unambiguously provided, given that the FHIR Type Mapping is potentially ambiguous (for the Period type specifically)
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlType
..... cqlAccessModifier 0..1 code What CQL access modifier
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlAccessModifier
Binding: CQL Access Modifier (required): The access modifier of the element

... dataRequirement S 0..* DataRequirement What data is referenced by this library
.... Slices for extension Content/Rules for all slices
..... isSelective S 0..1 boolean specifies whether a given DataRequirement is "selective"
URL: http://hl7.org/fhir/StructureDefinition/cqf-isSelective
..... valueFilter S 0..* (Complex) Extension
URL: http://hl7.org/fhir/StructureDefinition/cqf-valueFilter
..... fhirQueryPattern 0..* string What FHIR query?
URL: http://hl7.org/fhir/StructureDefinition/cqf-fhirQueryPattern

doco Documentation for this format

Constraints

IdGradePath(s)DetailsRequirements
mnf-2errorLibrary.relatedArtifact:dependencyDependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
: resource.exists() xor extension('http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference').exists()

Key Elements View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Library C 0..* Library Represents a library of quality improvement components
lib-0: Name should be usable as an identifier for the module by machine processing applications such as code generation
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... Slices for extension Content/Rules for all slices
.... directReferenceCode S 0..* Coding A code directly referenced by the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode
.... logicDefinition S 0..* (Complex) A logic definition used in the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition
.... inputParameters S 0..1 Reference(Parameters) The cqf-inputParameters extension is used to provide the actual parameters given to an operation (i.e. when the module is the result of a $data-requirements operation, what were the parameters to the operation). As opposed to the Library.parameter element, which provides the definition of parameters for the module.
URL: http://hl7.org/fhir/StructureDefinition/cqf-inputParameters
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... type SΣ 1..1 CodeableConcept logic-library | model-definition | asset-collection | module-definition
Binding: LibraryType (extensible): The type of knowledge asset this library contains.

... subject[x] S 0..1 Type of individual the library content is focused on
Binding: SubjectType (extensible): The possible types of subjects for a library (E.g. Patient, Practitioner, Organization, Location, etc.).

.... subjectCodeableConcept CodeableConcept
.... subjectReference Reference(Group)
... Slices for relatedArtifact S 0..* RelatedArtifact Dependencies used by the artifact
Slice: Unordered, Open by value:type
.... relatedArtifact:dependency SC 0..* RelatedArtifact What dependencies are referenced
mnf-2: Dependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
..... Slices for extension Content/Rules for all slices
...... resourceReference SC 0..1 Reference(Resource) A reference to the dependency artifact (for canonical promotions)
URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference
..... type SΣ 1..1 code documentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
Binding: RelatedArtifactType (required): The type of relationship to the related artifact.


Fixed Value: depends-on
..... display SΣ 0..1 string Brief description of the related artifact
..... resource SΣC 0..1 canonical(Resource) A reference to the dependency artifact (for canonical resources)
... parameter S 0..* ParameterDefinition Provides the definition of parameters for the module.
.... Slices for extension Content/Rules for all slices
..... defaultValue S 0..1 string, boolean, integer, decimal, date, dateTime, Coding, CodeableConcept, Period, Range, Quantity, Ratio cqf-defaultValue is used if the parameter definition has a default to provide the expected value of the default. Note that the value is provided according to the FHIR Type Mapping
URL: http://hl7.org/fhir/StructureDefinition/cqf-defaultValue
..... cqlType 0..1 string cqf-cqlType is used to ensure that the type of the parameter can be unambiguously provided, given that the FHIR Type Mapping is potentially ambiguous (for the Period type specifically)
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlType
..... cqlAccessModifier 0..1 code What CQL access modifier
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlAccessModifier
Binding: CQL Access Modifier (required): The access modifier of the element


.... use Σ 1..1 code in | out
Binding: OperationParameterUse (required): Whether the parameter is input or output.

.... type Σ 1..1 code What type of value
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.

... dataRequirement S 0..* DataRequirement What data is referenced by this library
.... Slices for extension Content/Rules for all slices
..... isSelective S 0..1 boolean specifies whether a given DataRequirement is "selective"
URL: http://hl7.org/fhir/StructureDefinition/cqf-isSelective
..... valueFilter S 0..* (Complex) Extension
URL: http://hl7.org/fhir/StructureDefinition/cqf-valueFilter
..... fhirQueryPattern 0..* string What FHIR query?
URL: http://hl7.org/fhir/StructureDefinition/cqf-fhirQueryPattern
.... type Σ 1..1 code The type of the required data
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.


doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Library.statusrequiredPublicationStatus
http://hl7.org/fhir/ValueSet/publication-status|4.0.1
from the FHIR Standard
Library.typeextensibleLibraryType
http://hl7.org/fhir/ValueSet/library-type
from the FHIR Standard
Library.subject[x]extensibleSubjectType
http://hl7.org/fhir/ValueSet/subject-type
from the FHIR Standard
Library.relatedArtifact:dependency.typerequiredFixed Value: depends-on
http://hl7.org/fhir/ValueSet/related-artifact-type|4.0.1
from the FHIR Standard
Library.parameter.userequiredOperationParameterUse
http://hl7.org/fhir/ValueSet/operation-parameter-use|4.0.1
from the FHIR Standard
Library.parameter.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard
Library.dataRequirement.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
dom-2errorLibraryIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3errorLibraryIf 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-4errorLibraryIf 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-5errorLibraryIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6best practiceLibraryA resource should have narrative for robust management
: text.`div`.exists()
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
lib-0warningLibraryName should be usable as an identifier for the module by machine processing applications such as code generation
: name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
mnf-2errorLibrary.relatedArtifact:dependencyDependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
: resource.exists() xor extension('http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference').exists()

Snapshot View

NameFlagsCard.TypeDescription & Constraintsdoco
.. Library C 0..* Library Represents a library of quality improvement components
lib-0: Name should be usable as an identifier for the module by machine processing applications such as code generation
... id Σ 0..1 id Logical id of this artifact
... meta Σ 0..1 Meta Metadata about the resource
... implicitRules ?!Σ 0..1 uri A set of rules under which this content was created
... language 0..1 code Language of the resource content
Binding: CommonLanguages (preferred): A human language.

Additional BindingsPurpose
AllLanguages Max Binding
... text 0..1 Narrative Text summary of the resource, for human interpretation
... contained 0..* Resource Contained, inline Resources
... Slices for extension 0..* Extension Extension
Slice: Unordered, Open by value:url
.... directReferenceCode S 0..* Coding A code directly referenced by the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-directReferenceCode
.... logicDefinition S 0..* (Complex) A logic definition used in the artifact
URL: http://hl7.org/fhir/StructureDefinition/cqf-logicDefinition
.... inputParameters S 0..1 Reference(Parameters) The cqf-inputParameters extension is used to provide the actual parameters given to an operation (i.e. when the module is the result of a $data-requirements operation, what were the parameters to the operation). As opposed to the Library.parameter element, which provides the definition of parameters for the module.
URL: http://hl7.org/fhir/StructureDefinition/cqf-inputParameters
... modifierExtension ?! 0..* Extension Extensions that cannot be ignored
... url Σ 0..1 uri Canonical identifier for this library, represented as a URI (globally unique)
... identifier Σ 0..* Identifier Additional identifier for the library
... version Σ 0..1 string Business version of the library
... name ΣC 0..1 string Name for this library (computer friendly)
... title Σ 0..1 string Name for this library (human friendly)
... subtitle 0..1 string Subordinate title of the library
... status ?!Σ 1..1 code draft | active | retired | unknown
Binding: PublicationStatus (required): The lifecycle status of an artifact.

... experimental Σ 0..1 boolean For testing purposes, not real usage
... type SΣ 1..1 CodeableConcept logic-library | model-definition | asset-collection | module-definition
Binding: LibraryType (extensible): The type of knowledge asset this library contains.

... subject[x] S 0..1 Type of individual the library content is focused on
Binding: SubjectType (extensible): The possible types of subjects for a library (E.g. Patient, Practitioner, Organization, Location, etc.).

.... subjectCodeableConcept CodeableConcept
.... subjectReference Reference(Group)
... date Σ 0..1 dateTime Date last changed
... publisher Σ 0..1 string Name of the publisher (organization or individual)
... contact Σ 0..* ContactDetail Contact details for the publisher
... description Σ 0..1 markdown Natural language description of the library
... useContext Σ 0..* UsageContext The context that the content is intended to support
... jurisdiction Σ 0..* CodeableConcept Intended jurisdiction for library (if applicable)
Binding: Jurisdiction ValueSet (extensible): Countries and regions within which this artifact is targeted for use.


... purpose 0..1 markdown Why this library is defined
... usage 0..1 string Describes the clinical usage of the library
... copyright 0..1 markdown Use and/or publishing restrictions
... approvalDate 0..1 date When the library was approved by publisher
... lastReviewDate 0..1 date When the library was last reviewed
... effectivePeriod Σ 0..1 Period When the library is expected to be used
... topic 0..* CodeableConcept E.g. Education, Treatment, Assessment, etc.
Binding: DefinitionTopic (example): High-level categorization of the definition, used for searching, sorting, and filtering.


... author 0..* ContactDetail Who authored the content
... editor 0..* ContactDetail Who edited the content
... reviewer 0..* ContactDetail Who reviewed the content
... endorser 0..* ContactDetail Who endorsed the content
... Slices for relatedArtifact S 0..* RelatedArtifact Dependencies used by the artifact
Slice: Unordered, Open by value:type
.... relatedArtifact:dependency SC 0..* RelatedArtifact What dependencies are referenced
mnf-2: Dependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
..... id 0..1 string Unique id for inter-element referencing
..... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
...... resourceReference SC 0..1 Reference(Resource) A reference to the dependency artifact (for canonical promotions)
URL: http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference
..... type SΣ 1..1 code documentation | justification | citation | predecessor | successor | derived-from | depends-on | composed-of
Binding: RelatedArtifactType (required): The type of relationship to the related artifact.


Fixed Value: depends-on
..... label Σ 0..1 string Short label
..... display SΣ 0..1 string Brief description of the related artifact
..... citation Σ 0..1 markdown Bibliographic citation for the artifact
..... url Σ 0..1 url Where the artifact can be accessed
..... document Σ 0..1 Attachment What document is being referenced
..... resource SΣC 0..1 canonical(Resource) A reference to the dependency artifact (for canonical resources)
... parameter S 0..* ParameterDefinition Provides the definition of parameters for the module.
.... id 0..1 string Unique id for inter-element referencing
.... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... defaultValue S 0..1 string, boolean, integer, decimal, date, dateTime, Coding, CodeableConcept, Period, Range, Quantity, Ratio cqf-defaultValue is used if the parameter definition has a default to provide the expected value of the default. Note that the value is provided according to the FHIR Type Mapping
URL: http://hl7.org/fhir/StructureDefinition/cqf-defaultValue
..... cqlType 0..1 string cqf-cqlType is used to ensure that the type of the parameter can be unambiguously provided, given that the FHIR Type Mapping is potentially ambiguous (for the Period type specifically)
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlType
..... cqlAccessModifier 0..1 code What CQL access modifier
URL: http://hl7.org/fhir/StructureDefinition/cqf-cqlAccessModifier
Binding: CQL Access Modifier (required): The access modifier of the element


.... name Σ 0..1 code Name used to access the parameter value
.... use Σ 1..1 code in | out
Binding: OperationParameterUse (required): Whether the parameter is input or output.

.... min Σ 0..1 integer Minimum cardinality
.... max Σ 0..1 string Maximum cardinality (a number of *)
.... documentation Σ 0..1 string A brief description of the parameter
.... type Σ 1..1 code What type of value
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.

.... profile Σ 0..1 canonical(StructureDefinition) What profile the value is expected to be
... dataRequirement S 0..* DataRequirement What data is referenced by this library
.... id 0..1 string Unique id for inter-element referencing
.... Slices for extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... isSelective S 0..1 boolean specifies whether a given DataRequirement is "selective"
URL: http://hl7.org/fhir/StructureDefinition/cqf-isSelective
..... valueFilter S 0..* (Complex) Extension
URL: http://hl7.org/fhir/StructureDefinition/cqf-valueFilter
..... fhirQueryPattern 0..* string What FHIR query?
URL: http://hl7.org/fhir/StructureDefinition/cqf-fhirQueryPattern
.... type Σ 1..1 code The type of the required data
Binding: FHIRAllTypes (required): A list of all the concrete types defined in this version of the FHIR specification - Abstract Types, Data Types and Resource Types.

.... profile Σ 0..* canonical(StructureDefinition) The profile of the required data
.... subject[x] Σ 0..1 E.g. Patient, Practitioner, RelatedPerson, Organization, Location, Device
Binding: SubjectType (extensible): The possible types of subjects for a data requirement (E.g., Patient, Practitioner, Organization, Location, etc.).

..... subjectCodeableConcept CodeableConcept
..... subjectReference Reference(Group)
.... mustSupport Σ 0..* string Indicates specific structure elements that are referenced by the knowledge module
.... codeFilter ΣC 0..* Element What codes are expected
drq-1: Either a path or a searchParam must be provided, but not both
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... path Σ 0..1 string A code-valued attribute to filter on
..... searchParam Σ 0..1 string A coded (token) parameter to search on
..... valueSet Σ 0..1 canonical(ValueSet) Valueset for the filter
..... code Σ 0..* Coding What code is expected
.... dateFilter ΣC 0..* Element What dates/date ranges are expected
drq-2: Either a path or a searchParam must be provided, but not both
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... path Σ 0..1 string A date-valued attribute to filter on
..... searchParam Σ 0..1 string A date valued parameter to search on
..... value[x] Σ 0..1 The value of the filter, as a Period, DateTime, or Duration value
...... valueDateTime dateTime
...... valuePeriod Period
...... valueDuration Duration
.... limit Σ 0..1 positiveInt Number of results
.... sort Σ 0..* Element Order of the results
..... id 0..1 string Unique id for inter-element referencing
..... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
..... path Σ 1..1 string The name of the attribute to perform the sort
..... direction Σ 1..1 code ascending | descending
Binding: SortDirection (required): The possible sort directions, ascending or descending.

... content Σ 0..* Attachment Contents of the library, either embedded or referenced

doco Documentation for this format

Terminology Bindings

PathConformanceValueSet / CodeURI
Library.languagepreferredCommonLanguages
Additional Bindings Purpose
AllLanguages Max Binding
http://hl7.org/fhir/ValueSet/languages
from the FHIR Standard
Library.statusrequiredPublicationStatus
http://hl7.org/fhir/ValueSet/publication-status|4.0.1
from the FHIR Standard
Library.typeextensibleLibraryType
http://hl7.org/fhir/ValueSet/library-type
from the FHIR Standard
Library.subject[x]extensibleSubjectType
http://hl7.org/fhir/ValueSet/subject-type
from the FHIR Standard
Library.jurisdictionextensibleJurisdiction ValueSet
http://hl7.org/fhir/ValueSet/jurisdiction
from the FHIR Standard
Library.topicexampleDefinitionTopic
http://hl7.org/fhir/ValueSet/definition-topic
from the FHIR Standard
Library.relatedArtifact:dependency.typerequiredFixed Value: depends-on
http://hl7.org/fhir/ValueSet/related-artifact-type|4.0.1
from the FHIR Standard
Library.parameter.userequiredOperationParameterUse
http://hl7.org/fhir/ValueSet/operation-parameter-use|4.0.1
from the FHIR Standard
Library.parameter.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard
Library.dataRequirement.typerequiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types|4.0.1
from the FHIR Standard
Library.dataRequirement.subject[x]extensibleSubjectType
http://hl7.org/fhir/ValueSet/subject-type
from the FHIR Standard
Library.dataRequirement.sort.directionrequiredSortDirection
http://hl7.org/fhir/ValueSet/sort-direction|4.0.1
from the FHIR Standard

Constraints

IdGradePath(s)DetailsRequirements
dom-2errorLibraryIf the resource is contained in another resource, it SHALL NOT contain nested Resources
: contained.contained.empty()
dom-3errorLibraryIf 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-4errorLibraryIf 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-5errorLibraryIf a resource is contained in another resource, it SHALL NOT have a security label
: contained.meta.security.empty()
dom-6best practiceLibraryA resource should have narrative for robust management
: text.`div`.exists()
drq-1errorLibrary.dataRequirement.codeFilterEither a path or a searchParam must be provided, but not both
: path.exists() xor searchParam.exists()
drq-2errorLibrary.dataRequirement.dateFilterEither a path or a searchParam must be provided, but not both
: path.exists() xor searchParam.exists()
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()
lib-0warningLibraryName should be usable as an identifier for the module by machine processing applications such as code generation
: name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
mnf-2errorLibrary.relatedArtifact:dependencyDependency reference must be either a resourceReference (referencing a canonical promotion) or a canonical (referencing a canonical resource), but not both
: resource.exists() xor extension('http://hl7.org/fhir/5.0/StructureDefinition/extension-RelatedArtifact.resourceReference').exists()

 

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