FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.2.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions
Official URL: http://hl7.org/fhir/StructureDefinition/cqf-expression | Version: 5.2.0-ballot | |||
Standards status: Trial-use | Maturity Level: 3 | Responsible: HL7 International / Clinical Decision Support | Computable Name: CQFExpression | |
Other Identifiers: OID:2.16.840.1.113883.4.642.5.1693 |
An expression that, when evaluated, provides the value for the element on which it appears.
Context of Use
This extension may be used on the following element(s):
Element
Usage info
Usage:
Changes since version 1.0.0:
Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.
This structure is derived from Extension
Name | Flags | Card. | Type | Description & Constraints![]() |
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0..1 | Extension | An dynamic expression | |
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0..0 | |||
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1..1 | uri | "http://hl7.org/fhir/StructureDefinition/cqf-expression" | |
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1..1 | Expression | Value of extension | |
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Name | Flags | Card. | Type | Description & Constraints![]() |
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0..1 | Extension | An dynamic expression | |
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0..1 | id | Unique id for inter-element referencing | |
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0..0 | |||
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1..1 | uri | "http://hl7.org/fhir/StructureDefinition/cqf-expression" | |
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1..1 | Expression | Value of extension | |
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This structure is derived from Extension
Summary
Simple Extension of type Expression: An expression that, when evaluated, provides the value for the element on which it appears.
Maturity: 3
Differential View
This structure is derived from Extension
Name | Flags | Card. | Type | Description & Constraints![]() |
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0..1 | Extension | An dynamic expression | |
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0..0 | |||
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1..1 | uri | "http://hl7.org/fhir/StructureDefinition/cqf-expression" | |
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1..1 | Expression | Value of extension | |
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Snapshot View
Name | Flags | Card. | Type | Description & Constraints![]() |
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0..1 | Extension | An dynamic expression | |
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0..1 | id | Unique id for inter-element referencing | |
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0..0 | |||
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1..1 | uri | "http://hl7.org/fhir/StructureDefinition/cqf-expression" | |
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1..1 | Expression | Value of extension | |
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Other representations of profile: CSV, Excel, Schematron
Id | Grade | Path(s) | Details | Requirements |
ele-1 | error | **ALL** elements | All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count()) | |
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both : extension.exists() != value.exists() |
The extension is unchanged in R4B
The extension is unchanged in R4
The extension is represented a little differently in R3:
Name | Flags | Card. | Type |
Description & Constraints
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0..1 | Extension | An dynamic expression | |||||
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0 ..* | Extension |
Extension
Slice: Unordered, Open by value:url |
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1..1 | (Complex) |
DataType name 'Expression' from R5 URL: http://hl7.org/fhir/StructureDefinition/_datatype |
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1.. 1 | string |
Value of extension
Fixed Value: Expression |
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0..1 | Extension | Natural language description of the condition | |||||
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0 .. 0 | |||||||
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1 .. 1 | uri | "description" | |||||
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1.. 1 | string | Value of extension | |||||
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0..1 | Extension | Short name assigned to expression for reuse | |||||
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0 .. 0 | |||||||
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1 .. 1 | uri | "name" | |||||
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1.. 1 | code | Value of extension | |||||
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0..1 | Extension | text/cql | text/fhirpath | application/x-fhir-query | etc. | |||||
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0 .. 0 | |||||||
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1 .. 1 | uri | "language" | |||||
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1.. 1 | code |
Value of extension
Binding: ExpressionLanguage ( extensible ): The media type of the expression language.
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0..1 | Extension | Expression in specified language | |||||
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0 .. 0 | |||||||
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1 .. 1 | uri | "expression" | |||||
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1.. 1 | string | Value of extension | |||||
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0..1 | Extension | Where the expression is found | |||||
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0 .. 0 | |||||||
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1 .. 1 | uri | "reference" | |||||
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1.. 1 | uri | Value of extension | |||||
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1 .. 1 | uri | "http://hl7.org/fhir/StructureDefinition/cqf-expression" | |||||
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0 .. 0 | |||||||
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(none found)