US Core Implementation Guide
8.0.1 - STU 8

US Core Implementation Guide, published by HL7 International / Cross-Group Projects. This guide is not an authorized publication; it is the continuous build for version 8.0.1 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/US-Core/ and changes regularly. See the Directory of published versions

## Extension: US Core Sex Extension

Official URL: http://hl7.org/fhir/us/core/StructureDefinition/us-core-sex | Version: 8.0.1
Standards status: Deprecated | Maturity Level: 3 | Computable Name: USCoreSexExtension
Other Identifiers: OID:2.16.840.1.113883.4.642.40.2.42.61
Copyright/Legal: Used by permission of HL7 International, all rights reserved Creative Commons License

The Sex Extension is used to reflect the documentation of a person's sex. Systems choosing to record sources of information should use the Provenance resource.

USCDI includes a data element for sex, intended to support the exchange of a sex value that is not characterized as sex assigned at birth or birth sex. This Sex extension supports USCDI. Sex assigned at birth or birth sex can be recorded using the more specific US Core Birth Sex Extension. Future versions of this extension may be informed by the content of the HL7 Cross Paradigm IG: Gender Harmony - Sex and Gender Representation, which may include additional guidance on its relationship to administrative gender (Patient.gender).

Context of Use

This extension is deprecated and should no longer be used

This extension is no longer a USCDI requirement and is deprecated. It SHOULD NOT be used for new or revised content. It is retained for historical/backward compatibility purposes. Implementers SHOULD use the US Core Individual Sex Extension instead.

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

- Element ID: `Patient`

Usage info

Usages:

- This Extension is not used by any profiles in this Implementation Guide

You can also check for usages in the FHIR IG Statistics

Changes since version 7.0.0:

- The resource metadata has changed (description)

### 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
url |  | 1..1 | uri | "http://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"
value[x] |  | 1..1 | code | Value of extension Binding: Sex (extensible): Concepts used for general documentation of sex representation
Documentation for this format

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | 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://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"
value[x] |  | 1..1 | code | Value of extension Binding: Sex (extensible): Concepts used for general documentation of sex representation
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code: The Sex Extension is used to reflect the documentation of a person's sex. Systems choosing to record sources of information should use the Provenance resource.

USCDI includes a data element for sex, intended to support the exchange of a sex value that is not characterized as sex assigned at birth or birth sex. This Sex extension supports USCDI. Sex assigned at birth or birth sex can be recorded using the more specific US Core Birth Sex Extension. Future versions of this extension may be informed by the content of the HL7 Cross Paradigm IG: Gender Harmony - Sex and Gender Representation, which may include additional guidance on its relationship to administrative gender (Patient.gender).

Maturity: 3

Differential View

This structure is derived from Extension

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | Extension
url |  | 1..1 | uri | "http://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"
value[x] |  | 1..1 | code | Value of extension Binding: Sex (extensible): Concepts used for general documentation of sex representation
Documentation for this format

Snapshot View

Name | Flags | Card. | Type | Description & Constraints Filter: Bindings Constraints Obligations
--- | --- | --- | --- | ---
Extension |  | 0..1 | Extension | 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://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"
value[x] |  | 1..1 | code | Value of extension Binding: Sex (extensible): Concepts used for general documentation of sex representation
Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code: The Sex Extension is used to reflect the documentation of a person's sex. Systems choosing to record sources of information should use the Provenance resource.

USCDI includes a data element for sex, intended to support the exchange of a sex value that is not characterized as sex assigned at birth or birth sex. This Sex extension supports USCDI. Sex assigned at birth or birth sex can be recorded using the more specific US Core Birth Sex Extension. Future versions of this extension may be informed by the content of the HL7 Cross Paradigm IG: Gender Harmony - Sex and Gender Representation, which may include additional guidance on its relationship to administrative gender (Patient.gender).

Maturity: 3

Other representations of profile: CSV, Excel, Schematron

#### Terminology Bindings

Path | Status | Usage | ValueSet | Version | Source
Extension.value[x] | Base | extensible | Sex | 📦20230628 | VSAC v0.24

#### 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()`