http://hl7.org/fhir/us/core/StructureDefinition/us-core-birthsex|8.0.0-ballot

A code classifying the person's sex assigned at birth as specified by the [Office of the National Coordinator for Health IT (ONC)](https://www.healthit.gov/newsroom/about-onc). This extension aligns with the C-CDA Birth Sex Observation (LOINC 76689-9). After version 6.0.0, this extension is no longer a *USCDI Requirement*.
NameFlagsCardTypeDescription & Constraints
Extension
0..1
 
url
?..?
 
value[x] *
1..1 http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1021.24 (required)
 
 
valueCode *
1..1code http://cts.nlm.nih.gov/fhir/ValueSet/2.16.840.1.113762.1.4.1021.24 (required)