BL: Boolean (V3 Data Type) - Definitions - Clinical Document Architecture with Australian Schema v1.0.1

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 1.0.1 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 - Detailed Descriptions

Active as of 2025-11-02

Maturity Level: 1

Definitions for the BL logical model.

Key Elements Table
Differential Elements Table
Snapshot Elements Table

Guidance on how to interpret the contents of this table can be foundhere

0. BL
Definition	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. Base definition for all types defined in FHIR type system.
Short	Base for all types and resources
Control	10..*
Is Modifier	false
Logical Container	ClinicalDocument (CDA Class)
XML Format	In the XML format, this property has the namespace `urn:hl7-org:v3`.
Invariants	value-null: value and nullFlavor are mutually exclusive (one must be present) (`(value \| nullFlavor).count() = 1`)
2. BL.nullFlavor
Definition	If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.
Control	0..1
Binding	The codes SHALL be taken from CDANullFlavor (required to `http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor`)
Type	code(cs: Coded Simple Value)
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
XML Format	In the XML format, this property is represented as an attribute.
Label	Exceptional Value Detail
4. BL.value
Definition	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.
Control	0..1
Type	boolean(bl: Boolean)
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
XML Format	In the XML format, this property is represented as an attribute.

Guidance on how to interpret the contents of this table can be foundhere

0. BL
Definition	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.
Control	1..*
Logical Container	ClinicalDocument (CDA Class)
XML Format	In the XML format, this property has the namespace `urn:hl7-org:v3`.
Invariants	value-null: value and nullFlavor are mutually exclusive (one must be present) (`(value \| nullFlavor).count() = 1`)
2. BL.value
Definition	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.
Control	0..1
Type	boolean(bl: Boolean)
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
XML Format	In the XML format, this property is represented as an attribute.

Guidance on how to interpret the contents of this table can be foundhere

0. BL
Definition	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.
Short	Base for all types and resources
Control	1..*
Is Modifier	false
Logical Container	ClinicalDocument (CDA Class)
XML Format	In the XML format, this property has the namespace `urn:hl7-org:v3`.
Invariants	value-null: value and nullFlavor are mutually exclusive (one must be present) (`(value \| nullFlavor).count() = 1`)
2. BL.nullFlavor
Definition	If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.
Control	0..1
Binding	The codes SHALL be taken from CDANullFlavor (required to `http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor`)
Type	code(cs: Coded Simple Value)
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
XML Format	In the XML format, this property is represented as an attribute.
Label	Exceptional Value Detail
4. BL.value
Definition	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.
Control	0..1
Type	boolean(bl: Boolean)
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
XML Format	In the XML format, this property is represented as an attribute.