FHIR Extensions Pack v5.3.0 (2026-10-06)

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.3.0 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

FHIR Infrastructure Work GroupMaturity Level: N/AStandards Status: InformativeSecurity Category: N/A Compartments: N/A

This table lists extensions for the ServiceRequest 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 Card. Type Context WG Status Δ v5.3.0
Extensions defined for the ServiceRequest resource
businessEvent 0..* (complex) DiagnosticReport , ServiceRequest oo Draft : FMM1 n/c
external-communication 0..* Reference Appointment , CarePlan , CommunicationRequest , DeviceRequest , MedicationRequest ,
NutritionOrder , RequestOrchestration , ServiceRequest , VisionPrescription ,
Task
oo Trial-Use : FMM1 n/c
patient-interpreterRequired 0..1 boolean Patient , RelatedPerson , Encounter , Practitioner , Appointment , ServiceRequest pa Trial-Use : FMM3 n/c
perform-condition 0..1 M Expression ServiceRequest oo Draft : FMM1 n/c
procedure-approachBodyStructure 0..* Reference Procedure , ServiceRequest , DeviceRequest , DeviceUsage , DeviceUseStatement,
Specimen.collection
pc Trial-Use : FMM3 n/c
procedure-directedBy 0..1 (Choice) Procedure , ServiceRequest pc Trial-Use : FMM3 n/c
procedure-targetBodyStructure 0..* Reference Procedure , ServiceRequest pc Trial-Use : FMM3 n/c
request-performerOrder 0..1 integer ServiceRequest.performer , Task.requestedPerformer fhir Trial-Use : FMM3 n/c
request-statusReason 0..1 CodeableConcept DeviceRequest , ServiceRequest , NutritionOrder , SupplyRequest fhir Trial-Use : FMM3 n/c
servicerequest-order-callback-phone-number 0..* ContactPoint ServiceRequest oo Trial-Use : FMM0 n/c
servicerequest-precondition 0..* CodeableConcept ServiceRequest oo Deprecated : FMM3 n/c
servicerequest-questionnaireRequest 0..1 Reference ServiceRequest oo Trial-Use : FMM3 n/c
servicerequest-specimenSuggestion 0..* (complex) ServiceRequest oo Trial-Use : FMM1 n/c
workflow-compliesWith 0..* (Choice) CarePlan , CarePlan.activity.plannedActivityReference , CommunicationRequest ,
DeviceRequest , ImmunizationRecommendation , MedicationRequest , NutritionOrder ,
RequestOrchestration , RequestGroup, SupplyRequest , ServiceRequest ,
Task , VisionPrescription , ObservationDefinition , DeviceDefinition ,
SpecimenDefinition
fhir Trial-Use : FMM2 n/c
workflow-episodeOfCare 0..* Reference AdverseEvent , Appointment , Basic , CarePlan , ClinicalImpression , Communication ,
CommunicationRequest , Composition , Condition , Consent , DetectedIssue ,
DeviceRequest , DeviceUsage , DeviceUseStatement, DiagnosticReport ,
DocumentReference , EnrollmentRequest , EnrollmentResponse , FamilyMemberHistory ,
Flag , Goal , ImagingStudy , Immunization , ImmunizationEvaluation , ImmunizationRecommendation ,
Invoice , List , MeasureReport , MedicationAdministration , MedicationDispense ,
MedicationRequest , MedicationStatement , MolecularSequence , NutritionIntake ,
NutritionOrder , Observation , Procedure , QuestionnaireResponse , RequestOrchestration ,
RequestGroup, ResearchSubject , RiskAssessment , SupplyDelivery , SupplyRequest ,
VisionPrescription , ServiceRequest , ChargeItem
fhir Trial-Use : FMM3 n/c
workflow-followOnOf 0..* Reference Task , DeviceRequest , ServiceRequest , Procedure , Encounter fhir Trial-Use : FMM2 n/c
workflow-generatedFrom 0..1 canonical CarePlan , CarePlan.activity.plannedActivityReference , Communication ,
CommunicationRequest , DeviceRequest , FamilyMemberHistory , ImmunizationEvaluation ,
ImmunizationRecommendation , MedicationRequest , NutritionOrder , Procedure ,
RequestOrchestration , RequestGroup, SupplyRequest , ServiceRequest ,
Task , VisionPrescription
fhir Trial-Use : FMM2 n/c
workflow-releaseDate 0..1 dateTime Account , Appointment , ArtifactAssessment , CarePlan , CarePlan.activity ,
ClinicalImpression , Communication , CommunicationRequest , Contract ,
DeviceDispense , DeviceRequest , DeviceUsage , DeviceUseStatement, Encounter ,
Endpoint , EpisodeOfCare , Goal , MedicationAdministration , MedicationDispense ,
MedicationRequest , NutritionIntake , NutritionOrder , Procedure , RequestOrchestration ,
RequestGroup, ServiceRequest , SupplyRequest , Task
fhir Trial-Use : FMM2 n/c
workflow-researchStudy 0..* Reference Composition , Consent , DeviceUsage , DeviceUseStatement, DiagnosticReport ,
Encounter , FamilyMemberHistory , Immunization , DocumentReference , MedicationAdministration ,
MedicationDispense , MedicationStatement , Observation , Procedure , QuestionnaireResponse ,
RiskAssessment , ServiceRequest , SupplyDelivery , Task , ObservationDefinition
fhir Trial-Use : FMM3 n/c
workflow-shallComplyWith 0..* (Choice) ActivityDefinition , Appointment , CarePlan , CommunicationRequest , DeviceRequest ,
ImmunizationRecommendation , Measure , MedicationRequest , NutritionOrder ,
OperationDefinition , PlanDefinition , RequestOrchestration , RequestGroup,
ServiceRequest , SupplyRequest , ObservationDefinition , DeviceDefinition ,
SpecimenDefinition , Task , VisionPrescription
fhir Trial-Use : FMM2 n/c
workflow-triggeredBy 0..1 (Choice) CarePlan , CarePlan.activity.plannedActivityReference , CommunicationRequest ,
DeviceRequest , Encounter , ImmunizationRecommendation , NutritionOrder ,
Procedure , RequestOrchestration , RequestGroup, SupplyRequest , ServiceRequest ,
Task , Condition , Communication , DiagnosticReport , DocumentReference ,
FamilyMemberHistory , Immunization , Observation , QuestionnaireResponse ,
SupplyDelivery , VisionPrescription , BiologicallyDerivedProductDispense ,
DeviceDispense , DeviceUsage , DeviceUseStatement, NutritionIntake ,
Transport
fhir Trial-Use : FMM2 n/c
Extensions defined for many resources including the ServiceRequest resource
datatype 0..1 string Base fhir Trial-Use : FMM2 n/c
additionalImplicitRules 0..* uri DomainResource fhir Trial-Use : FMM4 n/c
artifact-authoritativeSource 0..1 uri DomainResource cds Trial-Use : FMM1 n/c
artifact-extended-contact-detail 0..* ExtendedContactDetail Resource cds Trial-Use : FMM2 n/c
artifact-isOwned 0..1 boolean RelatedArtifact , ActivityDefinition.library , PlanDefinition.library ,
Measure.library , DomainResource.extension , type.exists() and type = 'composed-of'
cds Trial-Use : FMM1 n/c
artifact-jurisdiction 0..* CodeableConcept Resource cds Trial-Use : FMM2 n/c
artifactassessment-disposition 0..1 code Resource cds Draft : FMM1 n/c
artifactassessment-workflowStatus 0..1 code Resource cds Draft : FMM1 n/c
cqf-artifactComment 0..* (complex) Resource cds Trial-Use : FMM3 n/c
cqf-citation 0..1 string Resource cds Trial-Use : FMM3 n/c
cqf-definitionTerm 0..1 (complex) Resource cds Trial-Use : FMM3 n/c
cqf-directReferenceCode 0..* Coding Resource cds Trial-Use : FMM2 n/c
cqf-knowledgeCapability 0..* code DomainResource cds Trial-Use : FMM2 n/c
cqf-knowledgeRepresentationLevel 0..* code DomainResource cds Trial-Use : FMM2 n/c
cqf-library 0..* canonical DomainResource cds Trial-Use : FMM3 n/c
cqf-logicDefinition 0..* (complex) DomainResource cds Trial-Use : FMM2 n/c
cqf-measureInfo 0..* (complex) Resource , Reference cds Trial-Use : FMM3 n/c
cqf-messages 0..* Reference Resource cds Trial-Use : FMM3 n/c
cqf-scope 0..1 string Resource cds Trial-Use : FMM1 n/c
derivation-reference 0..* (complex) Resource , Element fhir Trial-Use : FMM2 n/c
feature-assertion 0..* (complex) Resource fhir Trial-Use : FMM2 n/c
note 0..* Annotation Resource , Composition.section , Observation.component fhir Trial-Use : FMM1 n/c
obligations-profile 0..* (complex) Provenance.target , Resource.meta fhir Draft : FMM0 n/c
package-source 0..* (complex) Resource , Meta , RelatedArtifact fhir Trial-Use : FMM1 Changed (D)
patient-sexParameterForClinicalUse 0..* (complex) Resource pa Trial-Use : FMM1 Changed (M)
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 n/c
structuredefinition-fmm 0..1 integer DomainResource , Element fhir Trial-Use : FMM3 n/c
structuredefinition-fmm-support 0..1 markdown DomainResource fhir Trial-Use : FMM2 n/c
structuredefinition-wg 0..1 code DomainResource fhir Trial-Use : FMM3 Changed (C)
version-specific-use 0..* (complex) Element , Resource fhir Trial-Use : FMM1 Changed (D)
version-specific-value 0..* (complex) Element , Resource fhir Trial-Use : FMM1 n/c
workflow-statusReason 0..* CodeableConcept DomainResource fhir Trial-Use : FMM2 n/c
Extensions that refer to the ServiceRequest resource
servicerequest-specimenSuggestion 0..* (complex) ServiceRequest oo Trial-Use : FMM1 n/c
Extensions that refer to many resources including the ServiceRequest resource
alternate-reference 0..1 Reference Reference fhir Trial-Use : FMM2 n/c
artifact-reference 0..1 (Choice) Element cds Deprecated : FMM1 n/c
cqf-relativeDateTime 0..1 (complex) Element cds Deprecated : FMM3 n/c
diagnosticReport-focus 0..* Reference DiagnosticReport oo Draft : FMM0 n/c
event-basedOn 0..* Reference Condition , ChargeItem , ClinicalImpression , Composition , Consent , Coverage ,
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 , Media pc Trial-Use : FMM3 n/c
patient-sexParameterForClinicalUse 0..* (complex) Resource pa Trial-Use : FMM1 Changed (M)
replaces 0..* canonical ActorDefinition , CapabilityStatement , ChargeItemDefinition , CompartmentDefinition ,
ConditionDefinition , ExampleScenario , GraphDefinition , ImplementationGuide ,
MessageDefinition , ObservationDefinition , OperationDefinition , Questionnaire ,
Requirements , SearchParameter , SpecimenDefinition , StructureDefinition ,
StructureMap , SubscriptionTopic , TerminologyCapabilities , TestScript
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 Changed (D)
workflow-protectiveFactor 0..* CodeableReference Goal , CommunicationRequest , CarePlan.activity fhir Trial-Use : FMM2 Changed (D)
workflow-supportingInfo 0..* Reference DiagnosticReport , DocumentReference , Encounter , Observation , CommunicationRequest fhir Trial-Use : FMM3 n/c

75 Extensions

Extension Search Parameters

This table lists search parameters defined for any of the extensions listed above in association with the core specification.