| Left: | US Core Gender Identity Extension (http://hl7.org/fhir/us/core/StructureDefinition/us-core-genderIdentity) | 
| Right: | US Core Gender Identity Extension (http://hl7.org/fhir/us/core/StructureDefinition/us-core-genderIdentity) | 
| Error | StructureDefinition.version | Values for version differ: '5.0.1' vs '8.0.0-ballot' | 
| Information | StructureDefinition.date | Values for date differ: '2022-01-22' vs '2022-11-17' | 
| Information | StructureDefinition.publisher | Values for publisher differ: 'HL7 International - Cross-Group Projects' vs 'HL7 International / Cross-Group Projects' | 
| Error | StructureDefinition.baseDefinition | Values for baseDefinition differ: 'http://hl7.org/fhir/StructureDefinition/patient-genderIdentity' vs 'http://hl7.org/fhir/StructureDefinition/Extension' | 
| Information | StructureDefinition.definition | Values for definition differ: 'An Extension' vs 'An individual's personal sense of being a man, woman, boy, girl, nonbinary, or something else.' | 
| Information | Extension | Element maximum cardinalities differ: '1' vs '2147483647' | 
| Information | StructureDefinition.short | Values for short differ: 'Extension' vs 'Additional content defined by implementations' | 
| Information | StructureDefinition.definition | Values for definition differ: 'An Extension' vs 'May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.' | 
| Information | Extension.extension | Element maximum cardinalities differ: '0' vs '2147483647' | 
| Information | StructureDefinition.definition | Values for definition differ: 'Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/extensibility.html) for a list).' vs 'Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list).' | 
| Information | Extension.value[x] | Element minimum cardinalities differ: '1' vs '0' | 
| Name | Value | Comments | |
|---|---|---|---|
|  abstract | false | ||
|  baseDefinition | http://hl7.org/fhir/StructureDefinition/patient-genderIdentity | http://hl7.org/fhir/StructureDefinition/Extension | 
 | 
|  copyright | Used by permission of HL7 International, all rights reserved Creative Commons License | ||
|  date | 2022-01-22 | 2022-11-17 | 
 | 
|  description | This extension provides concepts to describe the gender a person identifies as. | This extension represents an individual's sense of being a man, woman, boy, girl, nonbinary, or something else, ascertained by asking them what that identity is. Systems requiring multiple gender identities and associated dates **SHOULD** use the FHIR R5 [genderIdentity extension](http://hl7.org/fhir/extensions/StructureDefinition-individual-genderIdentity.html). When future versions of US Core are based on FHIR R5, the FHIR R5 extension will supersede this extension. | 
 | 
|  experimental | |||
|  fhirVersion | 4.0.1 | ||
|  jurisdiction | |||
|   jurisdiction[0] | urn:iso:std:iso:3166#US | ||
|  kind | complex-type | ||
|  name | USCoreGenderIdentityExtension | ||
|  publisher | HL7 International - Cross-Group Projects | HL7 International / Cross-Group Projects | 
 | 
|  purpose | Complies with USCDI v2 | 
 | |
|  status | active | ||
|  title | US Core Gender Identity Extension | ||
|  type | Extension | ||
|  url | http://hl7.org/fhir/us/core/StructureDefinition/us-core-genderIdentity | ||
|  version | 5.0.1 | 8.0.0-ballot | 
 | 
| Name | L Flags | L Card. | L Type | L Description & Constraints | R Flags | R Card. | R Type | R Description & Constraints | Comments  | 
|---|---|---|---|---|---|---|---|---|---|
|   Extension | 0..1 | genderIdentity | Extension | 0..* | Extension | Extension | 
 | ||
|    id | 0..1 | string | Unique id for inter-element referencing | 0..1 | string | Unique id for inter-element referencing | |||
|    Slices for extension | 0..0 | 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-genderIdentity" | 1..1 | uri | "http://hl7.org/fhir/us/core/StructureDefinition/us-core-genderIdentity" | |||
|    value[x] | 1..1 | CodeableConcept | Value of extension Binding: ?? (extensible) | 0..1 | CodeableConcept | Value of extension Binding: ?? (extensible) | 
 | ||
|  Documentation for this format | |||||||||