REAL: RealNumber (V3 Data Type) - 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

Logical Model: REAL: RealNumber (V3 Data Type)

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

Fractional numbers. Typically used whenever quantities are measured, estimated, or computed from other real numbers. The typical representation is decimal, where the number of significant decimal digits is known as the precision.

Usages:

Use this Logical Model: Criterion (CDA Class), Observation (CDA Class), ObservationRange (CDA Class), ADHA Observation (CDA Class) and ADHA ObservationRange (CDA Class)

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
REAL	C	1..*	QTY	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources Logical Container: ClinicalDocument (CDA Class) Constraints: value-null
(Choice of one)		1..1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@value		0..1	real
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
REAL.nullFlavor	required	CDANullFlavor `http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor` From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
value-null	error	REAL	value and nullFlavor are mutually exclusive (one must be present) : (value \| nullFlavor).count() = 1

This structure is derived from QTY

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
REAL	C	1..*	QTY	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources Logical Container: ClinicalDocument (CDA Class) Constraints: value-null
@value		0..1	real
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
value-null	error	REAL	value and nullFlavor are mutually exclusive (one must be present) : (value \| nullFlavor).count() = 1

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
REAL	C	1..*	QTY	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources Logical Container: ClinicalDocument (CDA Class) Constraints: value-null
(Choice of one)		1..1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@value		0..1	real
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
REAL.nullFlavor	required	CDANullFlavor `http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor` From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
value-null	error	REAL	value and nullFlavor are mutually exclusive (one must be present) : (value \| nullFlavor).count() = 1

This structure is derived from QTY

Summary

Structures

This structure refers to these other structures:

real: Real Number (http://hl7.org/cda/stds/core/StructureDefinition/real-simple)

Maturity: 1

Key Elements View

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
REAL	C	1..*	QTY	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources Logical Container: ClinicalDocument (CDA Class) Constraints: value-null
(Choice of one)		1..1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@value		0..1	real
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
REAL.nullFlavor	required	CDANullFlavor `http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor` From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
value-null	error	REAL	value and nullFlavor are mutually exclusive (one must be present) : (value \| nullFlavor).count() = 1

Differential View

This structure is derived from QTY

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
REAL	C	1..*	QTY	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources Logical Container: ClinicalDocument (CDA Class) Constraints: value-null
@value		0..1	real
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
value-null	error	REAL	value and nullFlavor are mutually exclusive (one must be present) : (value \| nullFlavor).count() = 1

Snapshot View

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
REAL	C	1..*	QTY	XML Namespace: urn:hl7-org:v3 Elements defined in Ancestors:@nullFlavor Base for all types and resources Logical Container: ClinicalDocument (CDA Class) Constraints: value-null
(Choice of one)		1..1
@nullFlavor		0..1	cs	Binding: CDANullFlavor (required)
@value		0..1	real
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
REAL.nullFlavor	required	CDANullFlavor `http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor` From this IG

Constraints

Id	Grade	Path(s)	Details	Requirements
value-null	error	REAL	value and nullFlavor are mutually exclusive (one must be present) : (value \| nullFlavor).count() = 1

This structure is derived from QTY

Summary

Structures

This structure refers to these other structures:

real: Real Number (http://hl7.org/cda/stds/core/StructureDefinition/real-simple)

Maturity: 1

Other representations of profile: CSV, Excel