2026 US Quality Core Implementation Guide
0.5.0 - release

2026 US Quality Core Implementation Guide - Downloaded Version 0.5.0 See the Directory of published versions

## Extension: USQualityCore Appropriateness Score

Official URL: http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-servicerequest-appropriatenessScore | Version: 0.5.0 | Highlight text changes?
Draft as of 2026-06-05 | Computable Name: USQualityCoreServiceRequestAppropriatenessScore

The appropriateness score for the requested action.

Context of Use

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

- Element ID: `ServiceRequest`

Usage

See the patterns page for implementation and usage patterns.

### Examples

Usage info

Usages:

- Examples for this Extension: ServiceRequest/appropriateness-example

You can also check for usages in the FHIR IG Statistics

### Formal Views of Extension Content

Description Differentials, Snapshots, and other representations.

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

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Appropriateness Score
Slices for extension |  |  |  | Content/Rules for all slices
extension:extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-servicerequest-appropriatenessScore"
value[x] |  | 1..1 |  | Value of extension Binding: Appropriateness Score (required): The RAND scoring for appropriateness of the procedure.
valueCode |  |  | code |
valueDecimal |  |  | decimal |
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Appropriateness Score | 📦2.0.0 | THO v7.1

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Appropriateness Score
id |  | 0..1 | string | Unique id for inter-element referencing
Slices for extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-servicerequest-appropriatenessScore"
value[x] |  | 1..1 |  | Value of extension Binding: Appropriateness Score (required): The RAND scoring for appropriateness of the procedure.
valueCode |  |  | code |
valueDecimal |  |  | decimal |
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Appropriateness Score | 📦2.0.0 | THO v7.1

#### Constraints

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())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`

Summary

Simple Extension with the type code, decimal: The appropriateness score for the requested action.

Differential ViewDifferential View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Appropriateness Score
Slices for extension |  |  |  | Content/Rules for all slices
extension:extension |  | 0..0 |  | Extension
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-servicerequest-appropriatenessScore"
value[x] |  | 1..1 |  | Value of extension Binding: Appropriateness Score (required): The RAND scoring for appropriateness of the procedure.
valueCode |  |  | code |
valueDecimal |  |  | decimal |
Documentation for this format

#### Terminology Bindings (Differential)

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Appropriateness Score | 📦2.0.0 | THO v7.1

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Appropriateness Score
id |  | 0..1 | string | Unique id for inter-element referencing
Slices for extension |  | 0..* | Extension | Additional content defined by implementations Slice: Unordered, Open by value:url
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-servicerequest-appropriatenessScore"
value[x] |  | 1..1 |  | Value of extension Binding: Appropriateness Score (required): The RAND scoring for appropriateness of the procedure.
valueCode |  |  | code |
valueDecimal |  |  | decimal |
Documentation for this format

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | required | Appropriateness Score | 📦2.0.0 | THO v7.1

#### Constraints

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())`
ext-1 | error | **ALL** extensions | Must have either extensions or value[x], not both | `extension.exists() != value.exists()`

Summary

Simple Extension with the type code, decimal: The appropriateness score for the requested action.

Other representations of profile: CSV, Excel, Schematron