DoD interim final rule eliminates DEERS sex-code changes while relabeling "gender marker" as "sex code"

Amends 32 CFR part 161 (Identification Cards for Members of the Uniformed Services, Their Dependents, and Other Eligible Individuals), replacing three instances of "gender" with "sex" and one instance of "gender marker" with "sex code." The substantive effect exceeds the terminology framing: the rule removes the procedures under which retirees, dependents, and contractor employees could request a change to their sex designation in the Defense Enrollment Eligibility Reporting System, eliminating the self-attestation process except to correct administrative error. Issued as an interim final rule effective on publication, DoD finding that "receiving public comment prior to effectuating this CFR amendment is impracticable," with comments invited through January 30, 2026.