Implementation Guide
27.0.0 - R4 APIs

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Extension: US Core Sex

Official URL: https://docs.mydata.athenahealth.com/fhir-r4/StructureDefinition-athena-us-core-sex.html Version: 27.0.0
Active as of 2026-04-22 Computable Name: UsCoreSex

Reflect the documentation of a person’s sex.

Context of Use

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

Usage info

Usages:

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.

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension US Core Sex
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"
... value[x] 1..1 code Concepts used for general documentation of sex representation
Binding: US Core Sex (extensible)

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension US Core Sex
... id 0..1 string Unique id for inter-element referencing
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code: Reflect the documentation of a person’s sex.

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension US Core Sex
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"
... value[x] 1..1 code Concepts used for general documentation of sex representation
Binding: US Core Sex (extensible)

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..* Extension US Core Sex
... id 0..1 string Unique id for inter-element referencing
... extension 0..0
... url 1..1 uri "http://hl7.org/fhir/us/core/StructureDefinition/us-core-sex"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code: Reflect the documentation of a person’s sex.

 

Other representations of profile: CSV, Excel, Schematron

Terminology Bindings

PathConformanceValueSetURI
Extension.value[x]extensibleUSCoreSex
http://hl7.org/fhir/us/core/ValueSet/us-core-sex
From this IG

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()