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| Package | Version | Identity | Name/Title | Status | FMM | WG | Date | Auth | Context | Modifier | Type | Usage # |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchElementDefinition.useContext.json | R4B: The context that the content is intended to support (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:UsageContext | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchElementDefinition.variableType.json | R4B: dichotomous | continuous | descriptive (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:code | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchElementDefinition.version.json | R4B: Business version of the research element definition (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:string | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.category.json | R4B: Classifications for the study (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.condition.json | R4B: Condition being studied (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.contact.json | R4B: Contact details for the study (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:ContactDetail | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.enrollment.json | R4B: Inclusion & exclusion criteria (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.location.json | R4B: Geographic region(s) for study (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.note.json | R4B: Comments made about the study additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy.note | Type:Annotation | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.objective.json | R4B: A goal for the study (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.period.json | R4B: period additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy.period | Type:Period | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.phase.json | R4B: n-a | early-phase-1 | phase-1 | phase-1-phase-2 | phase-2 | phase-2-phase-3 | phase-3 | phase-4 (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.primaryPurposeType.json | R4B: treatment | prevention | diagnostic | supportive-care | screening | health-services-research | basic-science | device-feasibility (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.principalInvestigator.json | R4B: Researcher who oversees multiple aspects of the study (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.reasonStopped.json | R4B: accrual-goal-met | closed-due-to-toxicity | closed-due-to-lack-of-study-progress | temporarily-closed-per-study-design (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.relatedArtifact.json | R4B: relatedArtifact additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy.relatedArtifact | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.sponsor.json | R4B: Organization that initiates and is legally responsible for the study (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchStudy.status.json | R4B: active | administratively-completed | approved | closed-to-accrual | closed-to-accrual-and-intervention | completed | disapproved | in-review | temporarily-closed-to-accrual | temporarily-closed-to-accrual-and-intervention | withdrawn | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy.status | Type:code | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchStudy.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchStudy.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchSubject.identifier.json | R4B: Business Identifier for research subject in a study additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchSubject.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchSubject.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchSubject.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchSubject.period.json | R4B: period additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchSubject.period | Type:Period | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ResearchSubject.status.json | R4B: candidate | eligible | follow-up | ineligible | not-registered | off-study | on-study | on-study-intervention | on-study-observation | pending-on-study | potential-candidate | screening | withdrawn | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchSubject.status | Type:code | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ResearchSubject.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ResearchSubject.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Resource.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Resource.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-RiskAssessment.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: RiskAssessment.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-RiskAssessment.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: RiskAssessment.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-RiskAssessment.note.json | R4B: note additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: RiskAssessment.comment | Type:Annotation | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-RiskAssessment.pre.probability.json | R4B: probability additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: RiskAssessment.prediction | Type:Range | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-RiskAssessment.pre.when.json | R4B: when additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: RiskAssessment.prediction | Type:Period,Range | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-RiskAssessment.reasonReference.json | R4B: reasonReference additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: RiskAssessment.reason | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-RiskAssessment.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: RiskAssessment.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SampledData.period.json | R4B: Number of milliseconds between samples additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SampledData.intervalUnit | Type:decimal | Mod:0 | |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Schedule.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Schedule.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Schedule.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Schedule.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Schedule.planningHorizon.json | R4B: Period of time covered by schedule additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Schedule.planningHorizon | Type:Period | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Schedule.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Schedule.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.base.json | R4B: base additional codes | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.base | Type:code | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.com.definition.json | R4B: definition additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.component.definition | Type:uri | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.contact.json | R4B: contact additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.contact | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SearchParameter.modifier.json | R4B: missing | exact | contains | not | text | in | not-in | below | above | type | identifier | ofType additional codes | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.modifier | Type:code | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.multipleAnd.json | R4B: Allow multiple parameters (and) (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter | Type:boolean | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.multipleOr.json | R4B: Allow multiple values per parameter (or) (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter | Type:boolean | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.target.json | R4B: target additional codes | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.target | Type:code | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.type.json | R4B: number | date | string | token | reference | composite | quantity | uri | special | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.type | Type:code | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SearchParameter.useContext.json | R4B: The context that the content is intended to support additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.useContext | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SearchParameter.xpathUsage.json | R4B: normal | phonetic | nearby | distance | other additional codes | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter.processingMode | Type:code | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SearchParameter.xpath.json | R4B: XPath that extracts the values (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SearchParameter | Type:string | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.identifier.json | R4B: Identifiers assigned to this order additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ProcedureRequest.identifier,ReferralRequest.identifier | Type:Identifier | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.instantiatesCanonical.json | R4B: Instantiates FHIR protocol or definition additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest.definition,ProcedureRequest.definition | Type:uri | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.instantiatesUri.json | R4B: Instantiates external protocol or definition (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest,ProcedureRequest | Type:uri | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.insurance.json | R4B: Associated insurance coverage (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest,ProcedureRequest | Type:Reference | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.intent.json | R4B: proposal | plan | directive | order | original-order | reflex-order | filler-order | instance-order | option | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ProcedureRequest.intent,ReferralRequest.intent | Type:code | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.locationCode.json | R4B: Requested location (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest,ProcedureRequest | Type:CodeableConcept | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.locationReference.json | R4B: Requested location (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest,ProcedureRequest | Type:Reference | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.meta.json | R4B: Metadata about the resource additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest.meta,ProcedureRequest.meta | Type:Meta | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.note.json | R4B: Comments additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest.note,ProcedureRequest.note | Type:Annotation | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.occurrence.json | R4B: When service should occur additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest,ProcedureRequest | Type:Period,Timing | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.patientInstruction.json | R4B: Patient or consumer-oriented instructions (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest,ProcedureRequest | Type:string | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.quantity.json | R4B: Service amount (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest,ProcedureRequest | Type:Quantity,Ratio,Range | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-ServiceRequest.reasonReference.json | R4B: Explanation/Justification for service or service additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ServiceRequest.reason | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.requisition.json | R4B: Composite Request ID additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ReferralRequest.groupIdentifier,ProcedureRequest.requisition | Type:Identifier | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-ServiceRequest.text.json | R4B: Text summary of the resource, for human interpretation additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ProcedureRequest.text,ReferralRequest.text | Type:complex | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Signature.targetFormat.json | R4B: The technical format of the signed resources (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Signature | Type:code | Mod:0 | |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Slot.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Slot.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Slot.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Slot.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Slot.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Slot.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.accessionIdentifier.json | R4B: accessionIdentifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.accessionIdentifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.col.duration.json | R4B: How long it took to collect specimen (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.collection | Type:Duration | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.col.fastingStatus.json | R4B: Whether or how long patient abstained from food and/or drink (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.collection | Type:Duration,CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.condition.json | R4B: State of the specimen (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Specimen.con.additive.json | R4B: Additive associated with container (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.container | Type:Reference,CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Specimen.con.capacity.json | R4B: Container volume or size (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.container | Type:Quantity | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Specimen.con.description.json | R4B: Textual description of the container (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.container | Type:string | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Specimen.con.identifier.json | R4B: Id for the container (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.container | Type:Identifier | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Specimen.con.type.json | R4B: Kind of container directly associated with specimen (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.container | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.note.json | R4B: note additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.note | Type:Annotation | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Specimen.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Specimen.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SpecimenDefinition.collection.json | R4B: Specimen collection procedure (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SpecimenDefinition.patientPreparation.json | R4B: Patient preparation for collection (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SpecimenDefinition.timeAspect.json | R4B: Time aspect for collection (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:string | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SpecimenDefinition.typeCollected.json | R4B: Kind of material to collect (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SpecimenDefinition.typeTested.json | R4B: Specimen in container intended for testing by lab (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.contact.json | R4B: Contact details for the publisher additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureDefinition.contact,DataElement.contact | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.con.type.json | R4B: fhirpath | element | extension (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: DataElement,StructureDefinition.context | Type:code | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.dif.element.json | R4B: Definition of elements in the resource (if no StructureDefinition) additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureDefinition.differential.element,DataElement.element | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.identifier.json | R4B: Additional identifier for the structure definition additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: DataElement.identifier,StructureDefinition.identifier | Type:Identifier | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.meta.json | R4B: Metadata about the resource additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: DataElement.meta,StructureDefinition.meta | Type:Meta | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.sna.element.json | R4B: element additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureDefinition.snapshot.element | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.text.json | R4B: Text summary of the resource, for human interpretation additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: DataElement.text,StructureDefinition.text | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureDefinition.useContext.json | R4B: The context that the content is intended to support additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: DataElement.useContext,StructureDefinition.useContext | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureMap.contact.json | R4B: contact additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.contact | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-StructureMap.gro.rul.sou.defaultValue.json | R4B: Default value if no value exists additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.group.rule.source | Type:date,dateTime,Meta,Address,Attachment,integer,Count,DataRequirement,Dosage,uuid,instant,ContactPoint,HumanName,Money,Identifier,Coding,SampledData,Ratio,positiveInt,Age,Distance,Reference,TriggerDefinition,Period,Quantity,Duration,Range,RelatedArtifact,url,Annotation,ContactDetail,boolean,base64Binary,Expression,UsageContext,Signature,unsignedInt,time,Timing,decimal,CodeableConcept,ParameterDefinition | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureMap.gro.rul.sou.logMessage.json | R4B: Message to put in log if source exists (FHIRPath) (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.group.rule.source | Type:string | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-StructureMap.gro.rul.tar.contextType.json | R4B: type | variable (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.group.rule.target | Type:code | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-StructureMap.gro.typeMode.json | R4B: none | types | type-and-types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.group.typeMode | Type:code | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureMap.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureMap.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureMap.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-StructureMap.useContext.json | R4B: The context that the content is intended to support additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: StructureMap.useContext | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Subscription.cha.payload.json | R4B: MIME type to send, or omit for no payload | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Subscription.channel.payload | Type:code | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Subscription.channel.json | R4B: The channel on which to report matches to the criteria (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Subscription | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Subscription.contact.json | R4B: contact additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Subscription.contact | Type:ContactPoint | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Subscription.criteria.json | R4B: Rule for server push (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Subscription | Type:string | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Subscription.error.json | R4B: Latest error note (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Subscription | Type:string | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Subscription.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Subscription.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Subscription.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Subscription.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionStatus.error.json | R4B: List of errors on the subscription (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SubscriptionStatus.eSSS.json | R4B: eventsSinceSubscriptionStart additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubscriptionStatus.eventsSinceSubscriptionStart | Type:string | Mod:0 | 4 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SubscriptionStatus.not.eventNumber.json | R4B: Event number additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubscriptionStatus.notificationEvent.eventNumber | Type:string | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionStatus.notificationEvent.json | R4B: Detailed information about any events relevant to this notification (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionStatus.status.json | R4B: requested | active | error | off | entered-in-error (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:code | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionStatus.subscription.json | R4B: Reference to the Subscription responsible for this notification (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionStatus.topic.json | R4B: Reference to the SubscriptionTopic this notification relates to (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:canonical | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionStatus.type.json | R4B: handshake | heartbeat | event-notification | query-status | query-event (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:code | Mod:1 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SubscriptionTopic.can.modifier.json | R4B: = | eq | ne | gt | lt | ge | le | sa | eb | ap | above | below | in | not-in | of-type | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubscriptionTopic.canFilterBy.modifier | Type:code | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionTopic.canFilterBy.json | R4B: Properties by which a Subscription can filter notifications from the SubscriptionTopic (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionTopic.derivedFrom.json | R4B: Based on FHIR protocol or definition (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:canonical | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionTopic.eventTrigger.json | R4B: Event definitions the SubscriptionTopic (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionTopic.jurisdiction.json | R4B: Intended jurisdiction of the SubscriptionTopic (if applicable) (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionTopic.notificationShape.json | R4B: Properties for describing the shape of notifications generated by this topic (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubscriptionTopic.resourceTrigger.json | R4B: Definition of a resource-based trigger for the subscription topic (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Substance.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Substance.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Substance.ing.quantity.json | R4B: quantity additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Substance.ingredient.quantity | Type:Ratio | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Substance.ins.expiry.json | R4B: When no longer valid to use (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Substance.instance | Type:dateTime | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Substance.ins.identifier.json | R4B: Identifier of the package/container (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Substance.instance | Type:Identifier | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Substance.ins.quantity.json | R4B: Amount of substance in the package (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Substance.instance | Type:Quantity | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Substance.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Substance.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Substance.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Substance.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.classification.json | R4B: A categorization, high level e.g. polymer or nucleic acid, or food, chemical, biological, or lower e.g. polymer linear or branch chain, or type of impurity (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification | Type:CodeableConcept | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.code.json | R4B: Codes associated with the substance (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.domain.json | R4B: If the substance applies to human or veterinary use (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.grade.json | R4B: The quality standard, established benchmark, to which substance complies (e.g. USP/NF, BP) (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification | Type:CodeableConcept | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.informationSource.json | R4B: Supporting literature (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification | Type:Reference | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.manufacturer.json | R4B: The entity that creates, makes, produces or fabricates the substance (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification | Type:Reference | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.moi.measurementType.json | R4B: The measurement type of the quantitative value (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.moiety | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.moiety.json | R4B: Moiety, for structural modifications (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.mol.amount.json | R4B: Used to capture quantitative values for a variety of elements (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.molecularWeight | Type:Quantity | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.mol.method.json | R4B: The method by which the weight was determined (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.molecularWeight | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.mol.type.json | R4B: Type of molecular weight e.g. exact, average, weight average (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.molecularWeight | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.molecularWeight.json | R4B: The molecular weight or weight range (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.nam.language.json | R4B: Human language that the name is written in | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.name.language | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.name.json | R4B: Names applicable to this substance (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:date,dateTime,Meta,code,string,Address,Attachment,integer,oid,Count,instant,ContactPoint,HumanName,Money,Identifier,Coding,markdown,SampledData,Ratio,id,positiveInt,Age,Distance,Reference,Period,Quantity,Duration,Range,uri,Annotation,boolean,base64Binary,Signature,unsignedInt,time,Timing,decimal,CodeableConcept | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.note.json | R4B: Textual comment about the substance's catalogue or registry record (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification | Type:Annotation | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.pro.type.json | R4B: A code expressing the type of property (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.property | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.pro.value.json | R4B: A value for the property (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.property | Type:date,boolean,Quantity,Attachment,CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.property.json | R4B: General specifications for this substance (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.rel.comparator.json | R4B: An operator for the amount, for example "average", "approximately", "less than" (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.relationship | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.rel.ratioHighLimitAmount.json | R4B: For use when the numeric has an uncertain range (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.relationship | Type:Ratio | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.rel.substanceDefinition.json | R4B: A pointer to another substance, as a resource or a representational code (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.relationship | Type:Reference,CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.rel.type.json | R4B: For example "salt to parent", "active moiety" (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.relationship | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.relationship.json | R4B: A link between this substance and another (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.sou.countryOfOrigin.json | R4B: The country or countries where the material is harvested (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.sourceMaterial | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.sou.genus.json | R4B: The genus of an organism e.g. the Latin epithet of the plant/animal scientific name (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.sourceMaterial | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.sou.part.json | R4B: An anatomical origin of the source material within an organism (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.sourceMaterial | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.sou.species.json | R4B: The species of an organism e.g. the Latin epithet of the species of the plant/animal (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.sourceMaterial | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.sou.type.json | R4B: Classification of the origin of the raw material. e.g. cat hair is an Animal source type (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.sourceMaterial | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.sourceMaterial.json | R4B: Material or taxonomic/anatomical source (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.str.rep.document.json | R4B: An attachment with the structural representation e.g. a structure graphic or AnIML file (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.structure.representation | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.str.rep.format.json | R4B: The format of the representation e.g. InChI, SMILES, MOLFILE (note: not the physical file format) (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.structure.representation | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.str.sourceDocument.json | R4B: Source of information for the structure (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.structure | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.str.technique.json | R4B: The method used to find the structure e.g. X-ray, NMR (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification.structure | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SubstanceDefinition.structure.json | R4B: Structural information (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r4 | R4 | StructureDefinition-ext-R4B-SubstanceDefinition.supplier.json | R4B: An entity that is the source for the substance. It may be different from the manufacturer (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SubstanceSpecification | Type:Reference | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyDelivery.identifier.json | R4B: identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyDelivery.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyDelivery.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyDelivery.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyDelivery.occurrence.json | R4B: occurrence additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyDelivery | Type:Period,Timing | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyDelivery.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyDelivery.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyRequest.identifier.json | R4B: Business Identifier for SupplyRequest additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyRequest.identifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SupplyRequest.item.json | R4B: item additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyRequest.item | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyRequest.meta.json | R4B: meta additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyRequest.meta | Type:Meta | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyRequest.occurrence.json | R4B: occurrence additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyRequest | Type:Period,Timing | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyRequest.parameter.json | R4B: Ordered item details (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyRequest.orderedItem | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-SupplyRequest.reasonReference.json | R4B: reasonReference additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyRequest.reason | Type:Reference | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-SupplyRequest.text.json | R4B: text additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: SupplyRequest.text | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.executionPeriod.json | R4B: executionPeriod additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task.executionPeriod | Type:Period | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.groupIdentifier.json | R4B: groupIdentifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task.groupIdentifier | Type:Identifier | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.identifier.json | R4B: Task Instance Identifier additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ProcessResponse.identifier,Task.identifier,ProcessRequest.identifier | Type:Identifier | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Task.inp.value.json | R4B: value additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task.input | Type:complex | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.insurance.json | R4B: Associated insurance coverage (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task,ProcessRequest,ProcessResponse | Type:Reference | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.intent.json | R4B: unknown | proposal | plan | order | original-order | reflex-order | filler-order | instance-order | option | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task.intent | Type:code | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.location.json | R4B: Where task occurs (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task,ProcessRequest,ProcessResponse | Type:Reference | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.meta.json | R4B: Metadata about the resource additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ProcessRequest.meta,Task.meta,ProcessResponse.meta | Type:Meta | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.note.json | R4B: note additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task.note | Type:Annotation | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Task.out.value.json | R4B: value additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task.output | Type:complex | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Task.performerType.json | R4B: Requested performer (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task | Type:CodeableConcept | Mod:0 | 2 |
| hl7.fhir.uv.xver-r4b.r5 | R5 | StructureDefinition-ext-R4B-Task.reasonReference.json | R4B: Why task is needed (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task | Type:Reference | Mod:0 | 5 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.res.period.json | R4B: period additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Task.restriction.period | Type:Period | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-Task.text.json | R4B: Text summary of the resource, for human interpretation additional types | trial-use | 0 | fhir | 2026-03 | hl7 | Context: ProcessRequest.text,ProcessResponse.text,Task.text | Type:complex | Mod:0 | 3 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-TerminologyCapabilities.closure.json | R4B: Information about the [ConceptMap/$closure](https://hl7.org/fhir/conceptmap-operation-closure.html) operation (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-TerminologyCapabilities.codeSearch.json | R4B: explicit | all (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:code | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-TerminologyCapabilities.codeSystem.json | R4B: A code system supported by the server (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-TerminologyCapabilities.contact.json | R4B: Contact details for the publisher (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:complex | Mod:0 | 1 |
| hl7.fhir.uv.xver-r4b.r3 | R3 | StructureDefinition-ext-R4B-TerminologyCapabilities.copyright.json | R4B: Use and/or publishing restrictions (new) | trial-use | 0 | fhir | 2026-03 | hl7 | Context: Basic | Type:markdown | Mod:0 | 1 |
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