Da Vinci Health Record Exchange (HRex)
1.2.0-snapshot - STU 1.2 United States of America flag

Da Vinci Health Record Exchange (HRex), published by HL7 International / Clinical Interoperability Council. This guide is not an authorized publication; it is the continuous build for version 1.2.0-snapshot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/davinci-ehrx/ and changes regularly. See the Directory of published versions

Data Type Profile: HRex Namespaced Identifier

1.2.0-snapshot
Official URL: http://hl7.org/fhir/us/davinci-hrex/StructureDefinition/hrex-identifier-namespaced Version:
Standards status: Trial-use Active as of 2026-01-30 Maturity Level: 3 Computable Name: HRexIdentifierNamespaced
Other Identifiers: OID:2.16.840.1.113883.4.642.40.19.42.22

An Identifier requiring both system and value

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

Description Differentials, Snapshots, and other representations.

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Identifier 0..* Identifier An identifier intended for computation
... use ?!Σ 0..1 code usual | official | temp | secondary | old (If known)
Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
... system SΣ 1..1 uri The namespace for the identifier value
Example General: http://www.acme.com/identifiers/patient
... value SΣ 1..1 string The value that is unique
Example General: 123456

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Identifier.use Base required IdentifierUse 📍4.0.1 FHIR Std.

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())

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Identifier 0..* Identifier An identifier intended for computation
... system S 1..1 uri The namespace for the identifier value
... value S 1..1 string The value that is unique

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Identifier 0..* Identifier An identifier intended for computation
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... use ?!Σ 0..1 code usual | official | temp | secondary | old (If known)
Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
... system SΣ 1..1 uri The namespace for the identifier value
Example General: http://www.acme.com/identifiers/patient
... value SΣ 1..1 string The value that is unique
Example General: 123456
... period Σ 0..1 Period Time period when id is/was valid for use
... assigner Σ 0..1 Reference(Organization) Organization that issued id (may be just text)

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Identifier.use Base required IdentifierUse 📍4.0.1 FHIR Std.
Identifier.type Base extensible IdentifierType 📍4.0.1 FHIR Std.

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()

Summary

Mandatory: 2 elements
Must-Support: 2 elements

Maturity: 3

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Identifier 0..* Identifier An identifier intended for computation
... use ?!Σ 0..1 code usual | official | temp | secondary | old (If known)
Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
... system SΣ 1..1 uri The namespace for the identifier value
Example General: http://www.acme.com/identifiers/patient
... value SΣ 1..1 string The value that is unique
Example General: 123456

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Identifier.use Base required IdentifierUse 📍4.0.1 FHIR Std.

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())

Differential View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Identifier 0..* Identifier An identifier intended for computation
... system S 1..1 uri The namespace for the identifier value
... value S 1..1 string The value that is unique

doco Documentation for this format

Snapshot ViewView

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Identifier 0..* Identifier An identifier intended for computation
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... use ?!Σ 0..1 code usual | official | temp | secondary | old (If known)
Binding: IdentifierUse (required): Identifies the purpose for this identifier, if known .
... system SΣ 1..1 uri The namespace for the identifier value
Example General: http://www.acme.com/identifiers/patient
... value SΣ 1..1 string The value that is unique
Example General: 123456
... period Σ 0..1 Period Time period when id is/was valid for use
... assigner Σ 0..1 Reference(Organization) Organization that issued id (may be just text)

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Identifier.use Base required IdentifierUse 📍4.0.1 FHIR Std.
Identifier.type Base extensible IdentifierType 📍4.0.1 FHIR Std.

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()

Summary

Mandatory: 2 elements
Must-Support: 2 elements

Maturity: 3

 

Other representations of profile: CSV, Excel, Schematron