HL7 v2.6 Vocabulary
0.2.0 - ci-build

HL7 v2.6 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v26/ and changes regularly. See the Directory of published versions

## Extension: Codesystem versionHistory (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory | Version: 1.0.0
Draft as of 2026-03-13 | Computable Name: versionHistory

extension for versionHistory

Context of Use

This extension may be used on the following element(s)

- Element ID: `CodeSystem`

Usage info

Usages:

- Examples for this Extension: PhManufacturersOfVaccinesMvxCdcNip, PhVaccinesAdministeredCvcCdcNip, Accept-applicationAcknowledgmentConditions, AccessRestrictionReason... Show 46 more, AccessRestrictionValue, AcknowledgmentCodes, ActionTakenInResponseToTheEvent, Active-inactive, AdditivePreservative, AddressExpirationReason, AddressType, AddressUsage, AdjustmentAction, AdjustmentCategory, AdministrationDevice, AdministrationMethod, AdministrativeSex, AdmissionLevelOfCare, AdmissionType, AdmitSource, AdvancedBeneficiaryNotice, AlertDevice, AlertLevel, AllergenType, AllergyClinicalStatus, AllergySeverity, AllowSubstitution, AlternateCharacterSetHandlingScheme, AlternateCharacterSets, AmbulatoryPaymentClassification, AmbulatoryStatus, AmountClass, AmountType, AnalyteRepeatStatus, Annotations, AppointmentReason, AppointmentType, ArrivalMode, ArtificialBlood, AssignmentOfBenefits, AuthorizationMode, BedStatus, BloodProduct, BloodProductDispenseStatus, BloodProductProcessingRequirements, BloodProductTransfusion-dispositionStatus, BodyParts, BodySite, BodySiteModifier and BpObservationStatusCodesInterpretation

You can also check for usages in the FHIR IG Statistics

### Formal Views of Extension Content

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

- Differential Table
- Snapshot Table
- Statistics/References
- All

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Extension
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: extension for versionHistory

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Extension
extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Extension
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  | Extension Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://terminology.hl7.org/v2plusvocab/StructureDefinition/codesystem-versionHistory"
value[x] |  | 1..1 | string | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type string: extension for versionHistory

Other representations of profile: CSV, Excel, Schematron

#### Constraints

Id | Grade | Path(s) | Description | Expression
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children | `hasValue() or (children().count() > id.count())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`