2026 US Quality Core Implementation Guide
0.5.0 - cibuild US

2026 US Quality Core Implementation Guide, published by Office of the National Coordinator for Health Information Technology (ONC). This guide is not an authorized publication; it is the continuous build for version 0.5.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/FHIR/us-quality-core/ and changes regularly. See the Directory of published versions

## Extension: US Quality Core IsElective

Official URL: http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-isElective | Version: 0.5.0
Draft as of 2026-05-15 | Computable Name: USQualityCoreIsElective

Indicates whether this is an elective procedure.

Context of Use

This extension is a modifier extension.

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

- Element ID: `ServiceRequest`

Usage

See the patterns page for implementation and usage patterns.

### Examples

Example of elective ServiceRequest

Usage info

Usages:

- This Extension is not used by any profiles in this Specification

You can also check for usages in the FHIR IG Statistics

### 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 Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension | ?! | 0..1 | Extension | Extension This is a modifier extension
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-isElective"
value[x] |  | 0..1 | boolean | Value of extension
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension | ?! | 0..1 | Extension | Extension This is a modifier extension
id |  | 0..1 | string | Unique id for inter-element referencing
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-isElective"
value[x] |  | 0..1 | boolean | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Modifier Extension with the type boolean: Indicates whether this is an elective procedure.

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension | ?! | 0..1 | Extension | Extension This is a modifier extension
url |  | 1..1 | uri | "http://fhir.org/guides/onc/us-quality-core/StructureDefinition/us-quality-core-isElective"
value[x] |  | 0..1 | boolean | Value of extension
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension | ?! | 0..1 | Extension | Extension This is a modifier extension
id |  | 0..1 | string | Unique id for inter-element referencing
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-isElective"
value[x] |  | 0..1 | boolean | Value of extension
Documentation for this format

This structure is derived from Extension

Summary

Simple Modifier Extension with the type boolean: Indicates whether this is an elective procedure.

Other representations of profile: CSV, Excel, Schematron

#### 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()`