description: An individual's personal sense of being a man, woman, boy, girl, nonbinary, or something else. This represents an individual’s identity, ascertained by asking them what that identity is. This extension is a copy of the FHIR R5 [genderIdentity extension](http://hl7.org/fhir/2022Sep/extension-individual-genderidentity.html) and may be superseded by it in futures versions of FHIR R5-based US Core. package_name: hl7.fhir.us.core derivation: constraint name: USCoreGenderIdentityExtension type: Extension elements: extension: short: The individual's gender identity type: Extension index: 0 slicing: slices: value: match: {} schema: short: The individual's gender identity type: Extension _required: true index: 0 extensions: {} elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: value} index: 2 value: choices: [valueCodeableConcept] index: 4 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 5} required: [value, valueCodeableConcept] period: match: {} schema: type: Extension short: The time period during which the gender identity applies to the individual index: 6 extensions: {} elements: extension: {index: 7} url: type: uri pattern: {type: Uri, value: period} index: 8 value: choices: [valuePeriod] index: 10 valuePeriod: {type: Period, choiceOf: value, index: 11} required: [valuePeriod, value] url: pattern: {type: Uri, value: 'http://hl7.org/fhir/us/core/StructureDefinition/us-core-genderIdentity'} index: 12 value: choices: [] index: 14 package_version: 6.0.0-ballot extensions: value: url: null short: The individual's gender identity type: Extension _required: true index: 0 extensions: {} elements: extension: {index: 1} url: type: uri pattern: {type: Uri, value: value} index: 2 value: choices: [valueCodeableConcept] index: 4 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 5} required: [value, valueCodeableConcept] period: url: null type: Extension short: The time period during which the gender identity applies to the individual index: 6 extensions: {} elements: extension: {index: 7} url: type: uri pattern: {type: Uri, value: period} index: 8 value: choices: [valuePeriod] index: 10 valuePeriod: {type: Period, choiceOf: value, index: 11} required: [valuePeriod, value] class: extension kind: complex-type url: http://hl7.org/fhir/us/core/StructureDefinition/us-core-genderIdentity base: http://hl7.org/fhir/StructureDefinition/Extension version: 6.0.0-ballot required: [extension]