CPG Pertinent To Extension - Clinical Practice Guidelines v3.0.0-ballot

Clinical Practice Guidelines
3.0.0-ballot - STU 3 Ballot International flag

Clinical Practice Guidelines, published by HL7 International / Clinical Decision Support. This guide is not an authorized publication; it is the continuous build for version 3.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/cqf-recommendations/ and changes regularly. See the Directory of published versions

Extension: CPG Pertinent To Extension - Detailed Descriptions

Active as of 2026-11-10

Definitions for the cpg-pertinentTo extension

Key Elements Table
Differential Table
Snapshot Table

See the documentation on how to interpret the contents of this table

0. Extension
Definition	Identifies the higher-level clinical finding (the target of a pertinence relationship) to which this resource is pertinent. This is the inverse of the cpg-pertinent extension, which references the pertinent information supporting a finding. Both directions are defined because the information on either side of the relationship may be outside the control of the system describing it. Optional Extension Element - found in all resources.
Short	CPG Pertinent To ExtensionOptional Extensions Element
Comments	The cpg-caseFeaturePertinence and cpg-pertinenceRating extensions may be used on the reference to describe the direction and weight of the pertinence relationship.
Control	0..* This element is affected by the following invariants: ele-1
Is Modifier	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()`) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
2. Extension.extension
Definition	An Extension May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and 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	0..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())
Slicing	This element introduces a set of slices on `Extension.extension`. The slices are Unordered and Open, and can be differentiated using the following discriminators: value @ url
4. Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`{ "url" : "http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-pertinentTo" }` `<url value="http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-pertinentTo"/>`
6. Extension.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Reference, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor 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()))

See the documentation on how to interpret the contents of this table

0. Extension
Definition	Identifies the higher-level clinical finding (the target of a pertinence relationship) to which this resource is pertinent. This is the inverse of the cpg-pertinent extension, which references the pertinent information supporting a finding. Both directions are defined because the information on either side of the relationship may be outside the control of the system describing it.
Short	CPG Pertinent To Extension
Comments	The cpg-caseFeaturePertinence and cpg-pertinenceRating extensions may be used on the reference to describe the direction and weight of the pertinence relationship.
2. Extension.extension
Control	0..0
4. Extension.url
Fixed Value	`{ "url" : "http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-pertinentTo" }` `<url value="http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-pertinentTo"/>`
6. Extension.value[x]
Type	Reference, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]

See the documentation on how to interpret the contents of this table

0. Extension
Definition	Identifies the higher-level clinical finding (the target of a pertinence relationship) to which this resource is pertinent. This is the inverse of the cpg-pertinent extension, which references the pertinent information supporting a finding. Both directions are defined because the information on either side of the relationship may be outside the control of the system describing it.
Short	CPG Pertinent To Extension
Comments	The cpg-caseFeaturePertinence and cpg-pertinenceRating extensions may be used on the reference to describe the direction and weight of the pertinence relationship.
Control	0..* This element is affected by the following invariants: ele-1
Is Modifier	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()`)
2. Extension.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
4. Extension.extension
Definition	An Extension
Short	Extension
Control	0..0
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 `Extension.extension`. The slices are Unordered and Open, and can be differentiated using the following discriminators: value @ url
6. Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`{ "url" : "http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-pertinentTo" }` `<url value="http://hl7.org/fhir/uv/cpg/StructureDefinition/cpg-pertinentTo"/>`
8. Extension.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..1
Type	Reference
[x] Note	SeeChoice of Data Typesfor 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())`)

IG © 2023+ HL7 International / Clinical Decision Support. Package hl7.fhir.uv.cpg#3.0.0-ballot based on FHIR 4.0.1. Generated 2026-11-10
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