FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.2.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions
This table lists extensions for the CanonicalResource resource defined in association with the core specification. For background information, see
Extensibility.
Additional extensions may be found in published
Implementation Guides 
and in the
Conformance resource registry .
| Identity | Conf. | Type | Context | WG | Status | Δ v1.0.0 |
| Extensions defined for the CanonicalResource resource |
| canonicalresource-short-description | 0..* | string | CanonicalResource | fhir | Experimental
Draft: FMM1 | n/c |
| structuredefinition-normative-version | 0..1 | code | CanonicalResource, ElementDefinition | fhir | Trial-Use: FMM3 | n/c |
| structuredefinition-standards-status | 0..1 | code | CanonicalResource, CodeSystem.concept, StructureDefinition.context,
SearchParameter.base, ElementDefinition, ElementDefinition.type,
ElementDefinition.targetProfile, OperationDefinition.parameter,
OperationDefinition.parameter.type, OperationDefinition.parameter.allowedType,
OperationDefinition.parameter.targetProfile, ImplementationGuide.definition.page | fhir | Trial-Use: FMM3 | n/c |
| Extensions defined for many resources including the CanonicalResource resource |
| datatype | 0..1 | string | Base | fhir | Trial-Use: FMM2 | n/c |
| artifact-approvalDate | 0..1 | date | Resource | cds | Trial-Use: FMM1 |  Added: |
| artifact-author | 0..* | ContactDetail | Resource | cds | Trial-Use: FMM2 |  Changed: |
| artifact-citeAs | 0..1 | (Choice) | Resource | cds | Trial-Use: FMM1 | Added: |
| artifact-contact | 0..* | ContactDetail | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-copyright | 0..1 | markdown | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-copyrightLabel | 0..1 | string | Resource | cds | Experimental
Draft: FMM1 | Changed: |
| artifact-date | 0..1 | dateTime | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-description | 0..1 | markdown | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-effectivePeriod | 0..1 | Period | Resource | cds | Trial-Use: FMM1 | Added: |
| artifact-experimental | 0..1 | boolean | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-identifier | 0..* | Identifier | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-isOwned | 0..1 | boolean | RelatedArtifact, ActivityDefinition.library, PlanDefinition.library,
Measure.library, DomainResource.extension, type.exists() and type = 'composed-of' | cds | Trial-Use: FMM1 | Added: |
| artifact-jurisdiction | 0..* | CodeableConcept | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-lastReviewDate | 0..1 | date | Resource | cds | Trial-Use: FMM1 | Added: |
| artifact-name | 0..1 | string | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-publisher | 0..1 | string | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-purpose | 0..1 | markdown | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-relatedArtifact | 0..* | RelatedArtifact | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-releaseDescription | 0..1 | markdown | Resource | cds | Trial-Use: FMM1 | Added: |
| artifact-releaseLabel | 0..1 | string | Resource | cds | Trial-Use: FMM1 | Added: |
| artifact-status | 0..1M | code | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-title | 0..1 | string | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-topic | 0..* | CodeableConcept | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-url | 0..1 | uri | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-usage | 0..1 | markdown | Resource | cds | Trial-Use: FMM1 | Added: |
| artifact-useContext | 0..* | UsageContext | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-version | 0..1 | string | Resource | cds | Trial-Use: FMM2 | Changed: |
| artifact-versionAlgorithm | 0..1 | (Choice) | Resource | cds | Draft: FMM1 | Changed: |
| artifact-versionPolicy | 0..1 | CodeableConcept | Resource | cds | Trial-Use: FMM1 | Added: |
| artifactassessment-disposition | 0..1 | code | Resource | cds | Draft: FMM1 | Added: |
| artifactassessment-workflowStatus | 0..1 | code | Resource | cds | Draft: FMM1 | Added: |
| cqf-artifactComment | 0..* | (complex) | Resource | cds | Trial-Use: FMM3 | Changed: |
| cqf-definitionTerm | 0..1 | (complex) | Resource | cds | Trial-Use: FMM3 | Added: |
| cqf-directReferenceCode | 0..* | Coding | Resource | cds | Trial-Use: FMM2 | Changed: |
| cqf-knowledgeCapability | 0..* | code | DomainResource | cds | Trial-Use: FMM2 | Changed: |
| cqf-knowledgeRepresentationLevel | 0..* | code | DomainResource | cds | Trial-Use: FMM2 | Changed: |
| cqf-library | 0..* | canonical | DomainResource | cds | Trial-Use: FMM3 | Changed: |
| cqf-logicDefinition | 0..* | (complex) | DomainResource | cds | Trial-Use: FMM2 | Changed: |
| cqf-measureInfo | 0..* | (complex) | Resource, Reference | cds | Trial-Use: FMM3 | Changed: |
| cqf-messages | 0..* | Reference | Resource | cds | Trial-Use: FMM3 | Added: |
| cqf-scope | 0..1 | string | Resource | cds | Trial-Use: FMM1 | Added: |
| derivation-reference | 0..* | (complex) | Resource, Element | fhir | Trial-Use: FMM2 | n/c |
| feature-assertion | 0..* | Coding | Provenance.target, Resource.meta | fhir | Experimental
Draft: FMM0 | Added: |
| note | 0..* | Annotation | Resource, Composition.section | fhir | Trial-Use: FMM1 | Added: |
| obligations-profile | 0..* | (complex) | Provenance.target, Resource.meta | fhir | Experimental
Draft: FMM0 | Added: |
| patient-sexParameterForClinicalUse | 0..* | (complex) | Resource | pa | Experimental
Draft: FMM1 | Changed: |
| resource-instance-description | 0..1 | markdown | Resource | fhir | Trial-Use: FMM2 | n/c |
| resource-instance-name | 0..1 | string | Resource | fhir | Trial-Use: FMM2 | n/c |
| resource-pertainsToGoal | 0..* | Reference | Resource | fhir | Trial-Use: FMM3 | n/c |
| satisfies-requirement | 0..* | (complex) | Resource, Element | fhir | Trial-Use: FMM2 | Changed: |
| structuredefinition-fmm | 0..1 | integer | DomainResource, Resource | fhir | Trial-Use: FMM3 | n/c |
| structuredefinition-fmm-support | 0..1 | markdown | DomainResource | fhir | Trial-Use: FMM2 | n/c |
| structuredefinition-standards-status-reason | 0..1 | markdown | DomainResource, http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status | fhir | Experimental
Draft: FMM1 | n/c |
| structuredefinition-wg | 0..1 | code | DomainResource | fhir | Trial-Use: FMM3 | n/c |
| version-specific-use | 0..* | (complex) | Element, Resource | fhir | Trial-Use: FMM1 | Added: |
| version-specific-value | 0..* | (complex) | Element, Resource | fhir | Trial-Use: FMM1 | Added: |
| Extensions that refer to the CanonicalResource resource |
| alternate-canonical | 0..1 | canonical | canonical | fhir | Trial-Use: FMM2 | Changed: |
| Extensions that refer to many resources including the CanonicalResource resource |
| alternate-reference | 0..1 | Reference | Reference | fhir | Trial-Use: FMM2 | n/c |
| artifact-reference | 0..1 | (Choice) | Element | cds | Trial-Use: FMM1 | Added: |
| cqf-relativeDateTime | 0..1 | (complex) | Element | cds | Deprecated: FMM3 | Changed: |
| diagnosticReport-focus | 0..* | Reference | DiagnosticReport | oo | Experimental
Draft: FMM0 | Changed: |
| event-basedOn | 0..* | Reference | Condition, ChargeItem, ClinicalImpression, Composition, Consent, Coverage,
DetectedIssue, EpisodeOfCare, ExplanationOfBenefit, FamilyMemberHistory,
ImmunizationEvaluation, InventoryReport, MedicationStatement, PaymentNotice,
PaymentReconciliation | fhir | Trial-Use: FMM3 | n/c |
| event-partOf | 0..* | Reference | DiagnosticReport, Condition | fhir | Trial-Use: FMM3 | n/c |
| flag-detail | 0..* | Reference | Flag | pc | Trial-Use: FMM3 | Changed: |
| patient-sexParameterForClinicalUse | 0..* | (complex) | Resource | pa | Experimental
Draft: FMM1 | Changed: |
| replaces | 0..* | canonical | ActivityDefinition, ActorDefinition, CapabilityStatement, ChargeItemDefinition,
Citation, CodeSystem, CompartmentDefinition, ConceptMap, ConditionDefinition,
EventDefinition, Evidence, EvidenceReport, EvidenceVariable, ExampleScenario,
GraphDefinition, ImplementationGuide, Library, Measure, MessageDefinition,
NamingSystem, ObservationDefinition, OperationDefinition, PlanDefinition,
Questionnaire, Requirements, SearchParameter, SpecimenDefinition,
StructureDefinition, StructureMap, SubscriptionTopic, TerminologyCapabilities,
TestScript, ValueSet | fhir | Trial-Use: FMM3 | n/c |
| request-replaces | 0..* | Reference | NutritionOrder, SupplyRequest, Task | fhir | Trial-Use: FMM3 | n/c |
| workflow-barrier | 0..* | CodeableReference | Goal, CommunicationRequest, CarePlan.activity | fhir | Trial-Use: FMM2 | n/c |
| workflow-protectiveFactor | 0..* | CodeableReference | Goal, CommunicationRequest, CarePlan.activity | fhir | Trial-Use: FMM2 | n/c |
| workflow-supportingInfo | 0..* | Reference | DiagnosticReport, DocumentReference, Encounter, Observation, CommunicationRequest | fhir | Trial-Use: FMM3 | n/c |
This table lists search parameters defined for any of the extensions listed above in association with the core specification.
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