# US Core Race Extension - US Core Implementation Guide v9.0.0

* [**Table of Contents**](toc.md)
* [**Artifacts Summary**](artifacts.md)
* **US Core Race Extension**

## Extension: US Core Race Extension 

| | | |
| :--- | :--- | :--- |
| *Official URL*:http://hl7.org/fhir/us/core/StructureDefinition/us-core-race | *Version*:9.0.0 | |
| * Standards status: *[Trial-use](http://hl7.org/fhir/R4/versions.html#std-process) | [Maturity Level](changes-between-versions.md#us-core-maturity-levels): 5 | *Computable Name*:USCoreRaceExtension |
| *Other Identifiers:*OID:2.16.840.1.113883.4.642.40.2.42.57 | | |

Concepts classifying the person into a named category of humans sharing common history, traits, geographical origin or nationality. The race codes used to represent these concepts are based upon the [Race & Ethnicity - CDC (CDCREC)](https://phinvads.cdc.gov/vads/ViewCodeSystem.action?id=2.16.840.1.113883.6.238) code system. Detailed race concepts are grouped by and pre-mapped to the 5 OMB race categories:

* American Indian or Alaska Native
* Asian
* Black or African American
* Native Hawaiian or Other Pacific Islander
* White.

Complies with 2015 Edition Common Clinical Data Set for patient race.

**Context of Use**

### Profile specific implementation guidance

* This Complex Extension for race allows one or more race codes of which: 
* [Must Support](must-support.md) at least one code from OMB Race Categories
* May include additional race codes from CDC Race Codes
* Must include a text description of race
 
* A [`race`] search parameter has been defined for this extension. However, there are no race search requirements for the Client or Server.

**Usage info**

**Usages:**

* Use this Extension: [US Core Patient Profile](StructureDefinition-us-core-patient.md)
* Examples for this Extension: [Patient/child-example](Patient-child-example.md), [Patient/deceased-example](Patient-deceased-example.md), [Patient/example](Patient-example.md) and [Patient/infant-example](Patient-infant-example.md)

You can also check for [usages in the FHIR IG Statistics](https://packages2.fhir.org/xig/resource/hl7.fhir.us.core|current/StructureDefinition/StructureDefinition-us-core-race.json)

**Changes since version 8.0.1:**

* The resource metadata has changed (description, copyright)

* The data elements list has changed

* One or more text definitions, invariants or bindings have changed

### Formal Views of Extension Content

 [Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work](http://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#structure-definitions). 

 

Other representations of profile: [CSV](StructureDefinition-us-core-race.csv), [Excel](StructureDefinition-us-core-race.xlsx), [Schematron](StructureDefinition-us-core-race.sch) 

#### Terminology Bindings

#### Constraints



## Resource Content

```json
{
  "resourceType" : "StructureDefinition",
  "id" : "us-core-race",
  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger" : 5
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "cgp"
  },
  {
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
    "valueCode" : "trial-use",
    "_valueCode" : {
      "extension" : [{
        "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-conformance-derivedFrom",
        "valueCanonical" : "http://hl7.org/fhir/us/core/ImplementationGuide/hl7.fhir.us.core"
      }]
    }
  }],
  "url" : "http://hl7.org/fhir/us/core/StructureDefinition/us-core-race",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:oid:2.16.840.1.113883.4.642.40.2.42.57"
  }],
  "version" : "9.0.0",
  "name" : "USCoreRaceExtension",
  "title" : "US Core Race Extension",
  "status" : "active",
  "date" : "2023-10-17",
  "publisher" : "HL7 International / Cross-Group Projects",
  "contact" : [{
    "name" : "HL7 International / Cross-Group Projects",
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/cgp"
    },
    {
      "system" : "email",
      "value" : "cgp@lists.HL7.org"
    }]
  }],
  "description" : "Concepts classifying the person into a named category of humans sharing common history, traits, geographical origin or nationality.  The race codes used to represent these concepts are based upon the [Race & Ethnicity - CDC (CDCREC)](https://phinvads.cdc.gov/vads/ViewCodeSystem.action?id=2.16.840.1.113883.6.238) code system. Detailed race concepts are grouped by and pre-mapped to the 5 OMB race categories:\n\n - American Indian or Alaska Native\n - Asian\n - Black or African American\n - Native Hawaiian or Other Pacific Islander\n - White.",
  "jurisdiction" : [{
    "coding" : [{
      "system" : "urn:iso:std:iso:3166",
      "code" : "US"
    }]
  }],
  "purpose" : "Complies with 2015 Edition Common Clinical Data Set for patient race.",
  "fhirVersion" : "4.0.1",
  "mapping" : [{
    "identity" : "rim",
    "uri" : "http://hl7.org/v3",
    "name" : "RIM Mapping"
  }],
  "kind" : "complex-type",
  "abstract" : false,
  "context" : [{
    "type" : "element",
    "expression" : "Patient"
  },
  {
    "type" : "element",
    "expression" : "RelatedPerson"
  },
  {
    "type" : "element",
    "expression" : "Person"
  },
  {
    "type" : "element",
    "expression" : "Practitioner"
  },
  {
    "type" : "element",
    "expression" : "FamilyMemberHistory"
  }],
  "type" : "Extension",
  "baseDefinition" : "http://hl7.org/fhir/StructureDefinition/Extension",
  "derivation" : "constraint",
  "differential" : {
    "element" : [{
      "id" : "Extension",
      "path" : "Extension",
      "short" : "US Core Race Extension",
      "definition" : "Concepts classifying the person into a named category of humans sharing common history, traits, geographical origin or nationality.  The race codes used to represent these concepts are based upon the [Race & Ethnicity - CDC (CDCREC)](https://phinvads.cdc.gov/vads/ViewCodeSystem.action?id=2.16.840.1.113883.6.238) code system. Detailed race concepts are grouped by and pre-mapped to the 5 OMB race categories:\n\n   - American Indian or Alaska Native\n   - Asian\n   - Black or African American\n   - Native Hawaiian or Other Pacific Islander\n   - White.",
      "min" : 0,
      "max" : "1",
      "condition" : ["us-core-23"],
      "constraint" : [{
        "key" : "us-core-23",
        "severity" : "error",
        "human" : "If \"ASKU\" or \"UNK\" are present, then no other OMB race categories can be present.",
        "expression" : "extension.where(url = 'ombCategory').value.where(code in 'ASKU'|'UNK').exists() implies extension.where(url = 'ombCategory').count() = 1"
      }]
    },
    {
      "id" : "Extension.extension",
      "path" : "Extension.extension",
      "slicing" : {
        "discriminator" : [{
          "type" : "value",
          "path" : "url"
        }],
        "rules" : "open"
      },
      "min" : 1
    },
    {
      "id" : "Extension.extension:ombCategory",
      "path" : "Extension.extension",
      "sliceName" : "ombCategory",
      "short" : "American Indian or Alaska Native|Asian|Black or African American|Native Hawaiian or Other Pacific Islander|White",
      "definition" : "The 5 race category codes according to the [OMB Standards for Maintaining, Collecting, and Presenting Federal Data on Race and Ethnicity, Statistical Policy Directive No. 15, as revised, October 30, 1997](https://www.govinfo.gov/content/pkg/FR-1997-10-30/pdf/97-28653.pdf).",
      "min" : 0,
      "max" : "6",
      "type" : [{
        "code" : "Extension"
      }],
      "mustSupport" : true
    },
    {
      "id" : "Extension.extension:ombCategory.url",
      "path" : "Extension.extension.url",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "uri"
      }],
      "fixedUri" : "ombCategory"
    },
    {
      "id" : "Extension.extension:ombCategory.value[x]",
      "path" : "Extension.extension.value[x]",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "Coding"
      }],
      "binding" : {
        "strength" : "required",
        "description" : "The 5 race category codes according to the [OMB Standards for Maintaining, Collecting, and Presenting Federal Data on Race and Ethnicity, Statistical Policy Directive No. 15, as revised, October 30, 1997](https://www.govinfo.gov/content/pkg/FR-1997-10-30/pdf/97-28653.pdf).",
        "valueSet" : "http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113883.4.642.2.575"
      }
    },
    {
      "id" : "Extension.extension:detailed",
      "path" : "Extension.extension",
      "sliceName" : "detailed",
      "short" : "Extended race codes",
      "definition" : "The 900+ CDC race codes that are grouped under one of the 5 OMB race category codes:.",
      "min" : 0,
      "max" : "*",
      "type" : [{
        "code" : "Extension"
      }]
    },
    {
      "id" : "Extension.extension:detailed.url",
      "path" : "Extension.extension.url",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "uri"
      }],
      "fixedUri" : "detailed"
    },
    {
      "id" : "Extension.extension:detailed.value[x]",
      "path" : "Extension.extension.value[x]",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "Coding"
      }],
      "binding" : {
        "strength" : "required",
        "valueSet" : "http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1267.25"
      }
    },
    {
      "id" : "Extension.extension:text",
      "path" : "Extension.extension",
      "sliceName" : "text",
      "short" : "Race Text",
      "definition" : "Plain text representation of the race concept(s).",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "Extension"
      }],
      "mustSupport" : true
    },
    {
      "id" : "Extension.extension:text.url",
      "path" : "Extension.extension.url",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "uri"
      }],
      "fixedUri" : "text"
    },
    {
      "id" : "Extension.extension:text.value[x]",
      "path" : "Extension.extension.value[x]",
      "min" : 1,
      "max" : "1",
      "type" : [{
        "code" : "string"
      }]
    },
    {
      "id" : "Extension.url",
      "path" : "Extension.url",
      "min" : 1,
      "max" : "1",
      "fixedUri" : "http://hl7.org/fhir/us/core/StructureDefinition/us-core-race"
    },
    {
      "id" : "Extension.value[x]",
      "path" : "Extension.value[x]",
      "min" : 0,
      "max" : "0"
    }]
  }
}

```
