uuid: DCE Universal Unique Identifier - Clinical Document Architecture with Australian Schema v1.0.0

Clinical Document Architecture with Australian Schema, published by Australian Digital Health Agency. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/AuDigitalHealth/cda-au-schema/ and changes regularly. See the Directory of published versions

Data Type Profile: uuid: DCE Universal Unique Identifier

Official URL: http://hl7.org/cda/stds/core/StructureDefinition/uuid				Version: 1.0.0
Active as of 2025-08-28		Maturity Level: 1	Responsible: HL7	Computable Name: uuid

A globally unique string representing a DCE Universal Unique Identifier (UUID) in the common UUID format that consists of 5 hyphen-separated groups of hexadecimal digits having 8, 4, 4, 4, and 12 places respectively.

NOTE: The output of UUID related programs and functions may use all sorts of forms, upper case, lower case, and with or without the hyphens that group the digits. This variate output must be postprocessed to conform to the HL7 specification, i.e., the hyphens must be inserted for the 8-4-4-4-12 grouping and all hexadecimal digits must be converted to upper case.

Usages:

Use this Primitive Type Profile: CD: ConceptDescriptor (V3 Data Type), II: InstanceIdentifier (V3 Data Type), SC: CharacterStringWithCode (V3 Data Type), ADHA Extension id and templateId

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

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

Key Elements Table
Differential Table
Snapshot Table
Statistics/References
All

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
string	C	0..*	string	Primitive Type string Constraints: uuid-pattern
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	ALL elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
uuid-pattern	error	string	Must contain 5 hyphen-separated groups of hexadecimal digits having 8, 4, 4, 4, and 12 places respectively. : matches('^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$')

This structure is derived from string

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
string	C	0..*	string	Primitive Type string Constraints: uuid-pattern
id		0..0
extension		0..0
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
uuid-pattern	error	string	Must contain 5 hyphen-separated groups of hexadecimal digits having 8, 4, 4, 4, and 12 places respectively. : matches('^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$')

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
string	C	0..*	string	Primitive Type string Constraints: uuid-pattern
value		0..1	string	Primitive value for string Max Length:1048576
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	ALL elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
uuid-pattern	error	string	Must contain 5 hyphen-separated groups of hexadecimal digits having 8, 4, 4, 4, and 12 places respectively. : matches('^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$')

This structure is derived from string

Summary

Prohibited: 2 elements

Maturity: 1

Key Elements View

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
string	C	0..*	string	Primitive Type string Constraints: uuid-pattern
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	ALL elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
uuid-pattern	error	string	Must contain 5 hyphen-separated groups of hexadecimal digits having 8, 4, 4, 4, and 12 places respectively. : matches('^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$')

Differential View

This structure is derived from string

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
string	C	0..*	string	Primitive Type string Constraints: uuid-pattern
id		0..0
extension		0..0
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
uuid-pattern	error	string	Must contain 5 hyphen-separated groups of hexadecimal digits having 8, 4, 4, 4, and 12 places respectively. : matches('^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$')

Snapshot View

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
string	C	0..*	string	Primitive Type string Constraints: uuid-pattern
value		0..1	string	Primitive value for string Max Length:1048576
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
ele-1	error	ALL elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
uuid-pattern	error	string	Must contain 5 hyphen-separated groups of hexadecimal digits having 8, 4, 4, 4, and 12 places respectively. : matches('^[0-9A-Za-z]{8}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{4}-[0-9A-Za-z]{12}$')

This structure is derived from string

Summary

Prohibited: 2 elements

Maturity: 1

Other representations of profile: CSV, Excel, Schematron