Clinical Document Architecture - Local Development build (v2.0.1-sd-202510-matchbox-patch) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions
| Official URL: http://hl7.org/cda/stds/core/StructureDefinition/bl-simple | Version: 2.0.1-sd-202510-matchbox-patch | |||
| Active as of 2025-10-29 | Computable Name: bl | |||
The Boolean type stands for the values of two-valued logic. A Boolean value can be either true or false.
Usages:
You can also check for usages in the FHIR IG Statistics
Description of Template, Differentials, Snapshots and how the different presentations work.
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
0..* | boolean | Primitive Type boolean | |
  Documentation for this format | ||||
| 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())
     | 
  
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
0..* | boolean | Primitive Type boolean | |
![]() ![]()  | 
0..1 | boolean | Primitive value for boolean | |
  Documentation for this format | ||||
| 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())
     | 
  
This structure is derived from boolean
Differential View
This structure is derived from boolean
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
boolean | |||
![]() ![]()  | 
0..0 | xml:id (or equivalent in JSON) | ||
![]() ![]()  | 
0..0 | Extension | ||
  Documentation for this format | ||||
Key Elements View
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
0..* | boolean | Primitive Type boolean | |
  Documentation for this format | ||||
| 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())
     | 
  
Snapshot View
| Name | Flags | Card. | Type | Description & Constraints    Filter:  ![]() ![]()  | 
|---|---|---|---|---|
![]()  | 
0..* | boolean | Primitive Type boolean | |
![]() ![]()  | 
0..1 | boolean | Primitive value for boolean | |
  Documentation for this format | ||||
| 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())
     | 
  
This structure is derived from boolean
Other representations of profile: CSV, Excel, Schematron