Da Vinci - Documentation Templates and Rules
2.1.0 - STU 2.1

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## Extension: Alternative Expression

Official URL: http://hl7.org/fhir/us/davinci-dtr/StructureDefinition/alternativeExpression | Version: 2.1.0
Standards status: Trial-use | Maturity Level: 2 | Computable Name: AlternativeExpression

Provides an alternate expression containing the compiled JSON ELM for an expression. (NOTE: The expectation is that this extension will transition to the core extensions pack)

Context of Use

This extension may be used on the following element(s):

- Element ID Expression

Usage info

Usage:

- Examples for this Extension: Bundle/home-o2-questionnairepackage-bundle-2, Bundle/home-o2-questionnairepackage-bundle, Parameters/QuestionnairePackageOutputParamsExample and HomeOxygenTherapyStdQuestionnaire

### Formal Views of Extension Content

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

- Differential Table
- Snapshot Table
- Statistics/References
- All

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Alternative Expression
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org/fhir/us/davinci-dtr/StructureDefinition/alternativeExpression"
value[x] |  | 1..1 | Expression | Alternate expression containing compiled JSON ELM.
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Alternative Expression
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org/fhir/us/davinci-dtr/StructureDefinition/alternativeExpression"
value[x] |  | 1..1 | Expression | Alternate expression containing compiled JSON ELM.
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension of type Expression: Provides an alternate expression containing the compiled JSON ELM for an expression. (NOTE: The expectation is that this extension will transition to the core extensions pack)

Maturity: 2

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Alternative Expression
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org/fhir/us/davinci-dtr/StructureDefinition/alternativeExpression"
value[x] |  | 1..1 | Expression | Alternate expression containing compiled JSON ELM.
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints
--- | --- | --- | --- | ---
Extension |  | 0..* | Extension | Alternative Expression
id |  | 0..1 | string | Unique id for inter-element referencing
extension |  | 0..0 |  |
url |  | 1..1 | uri | "http://hl7.org/fhir/us/davinci-dtr/StructureDefinition/alternativeExpression"
value[x] |  | 1..1 | Expression | Alternate expression containing compiled JSON ELM.
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension of type Expression: Provides an alternate expression containing the compiled JSON ELM for an expression. (NOTE: The expectation is that this extension will transition to the core extensions pack)

Maturity: 2

Other representations of profile: CSV, Excel, Schematron