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 [CDC Race and Ethnicity Code Set Version 1.0](http://www.cdc.gov/phin/resources/vocabulary/index.html) which includes over 900 concepts for representing race and ethnicity of which 921 reference race. The 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. package_name: hl7.fhir.us.core derivation: constraint name: USCoreRaceExtension type: Extension elements: extension: short: American Indian or Alaska Native|Asian|Black or African American|Native Hawaiian or Other Pacific Islander|White type: Extension mustSupport: true array: true max: 5 index: 0 slicing: slices: ombCategory: match: {} schema: short: American Indian or Alaska Native|Asian|Black or African American|Native Hawaiian or Other Pacific Islander|White type: Extension mustSupport: true array: true max: 5 index: 0 elements: url: type: uri pattern: {type: Uri, value: ombCategory} index: 1 valueCoding: type: Coding binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/omb-race-category'} index: 2 required: [valueCoding, url] detailed: match: {} schema: short: Extended race codes type: Extension array: true index: 3 elements: url: type: uri pattern: {type: Uri, value: detailed} index: 4 valueCoding: type: Coding binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/detailed-race'} index: 5 required: [valueCoding, url] text: match: {} schema: short: Race Text type: Extension mustSupport: true _required: true index: 6 elements: url: type: uri pattern: {type: Uri, value: text} index: 7 valueString: {type: string, index: 8} required: [url, valueString] url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-race'} index: 9 value: choices: [] index: 11 package_version: 3.1.0 extensions: ombCategory: short: American Indian or Alaska Native|Asian|Black or African American|Native Hawaiian or Other Pacific Islander|White index: 0 type: Extension mustSupport: true array: true elements: url: type: uri pattern: {type: Uri, value: ombCategory} index: 1 valueCoding: type: Coding binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/omb-race-category'} index: 2 max: 5 url: null required: [valueCoding, url] detailed: url: null short: Extended race codes type: Extension array: true index: 3 elements: url: type: uri pattern: {type: Uri, value: detailed} index: 4 valueCoding: type: Coding binding: {strength: required, valueSet: 'http://hl7.org/fhir/us/core/ValueSet/detailed-race'} index: 5 required: [valueCoding, url] text: url: null short: Race Text type: Extension mustSupport: true _required: true index: 6 elements: url: type: uri pattern: {type: Uri, value: text} index: 7 valueString: {type: string, index: 8} required: [url, valueString] class: extension kind: complex-type url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-race base: http://hl7.org/fhir/StructureDefinition/Extension version: 3.1.0 required: [url]