BL: Boolean (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: BL: Boolean (V3 Data Type)

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

The Boolean type stands for the values of two-valued logic. A Boolean value can be either true or false, or, as any other value may be NULL.

Usages:

Use this Logical Model: Criterion (CDA Class), EntryRelationship (CDA Class), LanguageCommunication (CDA Class), Observation (CDA Class)... Show 17 more

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
BL	C	1..*	ANY	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	bl
Documentation for this format

Terminology Bindings

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

Constraints

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

This structure is derived from ANY

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
BL	C	1..*	ANY	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	bl
Documentation for this format

Constraints

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

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
BL	C	1..*	ANY	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	bl
Documentation for this format

Terminology Bindings

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

Constraints

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

This structure is derived from ANY

Summary

Structures

This structure refers to these other structures:

bl: Boolean (http://hl7.org/cda/stds/core/StructureDefinition/bl-simple)

Maturity: 1

Key Elements View

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
BL	C	1..*	ANY	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	bl
Documentation for this format

Terminology Bindings

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

Constraints

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

Differential View

This structure is derived from ANY

Name	Flags	Card.	Type	Description & Constraints Filter: Bindings Constraints Obligations
BL	C	1..*	ANY	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	bl
Documentation for this format

Constraints

Id	Grade	Path(s)	Details	Requirements
value-null	error	BL	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
BL	C	1..*	ANY	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	bl
Documentation for this format

Terminology Bindings

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

Constraints

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

This structure is derived from ANY

Summary

Structures

This structure refers to these other structures:

bl: Boolean (http://hl7.org/cda/stds/core/StructureDefinition/bl-simple)

Maturity: 1

Other representations of profile: CSV, Excel