The Social Security Administration (SSA) maintains a sex designation for every number holder in its Numerical Identification System, known as the NUMIDENT. While a Social Security card does not display a person’s sex, the sex field in the NUMIDENT appears in SSA records used for benefit administration, identity verification, and data exchanges with other agencies. The sex designation in SSA records can also appear on credit reports, hospital medical records, Federal Student Aid records, background checks, and financial records.
For decades, the process for changing the sex field on the NUMIDENT evolved — from requiring surgical documentation beginning in 1980, to accepting court orders and medical certifications beginning in 2013, to allowing self-attestation without documentation under Biden-era policy in 2022. Following President Trump’s January 20, 2025 executive order, “Defending Women from Gender Ideology Extremism and Restoring Biological Truth to the Federal Government,” SSA issued Emergency Message (EM) 25014 on January 31, 2025, immediately prohibiting all changes to the sex field on the NUMIDENT. That prohibition was subsequently reflected in an update to POMS RM 10212.200 in February 2025.
On May 26, 2026, SSA issued POMS RM 10212.200 TN 33, Legal Names and Changes to the NUMIDENT, effective that day. This transmittal represents a significant further development: it affirmatively restores a narrow pathway for sex field changes, but only for the purpose of reverting a number holder’s NUMIDENT record to reflect their sex at birth. The documentation chart in Subsection B.2 has been revised to allow updates for this narrow reason and specifies required documentation for both U.S.-born and foreign-born applicants requesting such a change. Importantly, the transmittal adds a note that amended, corrected, or delayed birth certificates will not be accepted unless accompanied by documentation clearly indicating the reason for the amendment. This provision effectively forecloses reliance on amended birth certificates that reflect a gender marker change — a document that many transgender individuals obtained specifically to update their SSA records.
Subsection B.3.a. states that if the sex code on the NUMIDENT is updated, SSA should not update the MBR (Master Beneficiary Record), SSR (Supplemental Security Record), RPS, or any other SSA record with the new sex designation. This is a significant provision for disability advocates: it means that even where a sex field change is processed under this new framework, it will not automatically flow through to benefits records.
The growing divergence between sex markers in SSA’s NUMIDENT and sex markers on state-issued IDs, amended birth certificates, passports, and other documents creates practical complications for clients in the benefits context. Advocates should anticipate identity mismatch issues when assisting clients whose other documents reflect an updated gender marker, and may need to address discrepancies.
The new POMS transmittal’s refusal to accept amended birth certificates unless accompanied by documentation explaining the amendment is particularly significant in New York, where individuals can amend birth certificates through a self-attestation process. New York amended birth certificates reflecting a gender marker change will not be sufficient under the new framework to change the sex field on the NUMIDENT — even for clients who obtained those amendments years ago specifically to update their SSA records.
Despite these changes, several protections and limitations remain in effect:
- Benefit eligibility is unaffected. The sex field on the NUMIDENT is not used to make any determination about initial or continuing benefit eligibility for SSI, SSDI, or Medicare. A person’s sex marker does not affect their right to receive disability benefits.
- Name changes remain available. Individuals can still change their name with SSA following a legal name change by submitting Form SS-5 with proof such as a court order or marriage certificate.
- Prior marker changes. Sex marker changes made prior to January 31, 2025 remain in effect in SSA’s records for now, though the new transmittal’s framework for reverting records to sex at birth may affect how SSA handles future interactions involving those records.
- Clients who experience discriminatory treatment at SSA offices may file a formal complaint on the basis of sex. As of February 2025, SSA discrimination complaint forms no longer explicitly include sexual orientation and gender identity, but sex-based discrimination complaints remain available.
Prior SSA guidance regarding sex markers was discussed in the July 2025 and July 2022 issues of this newsletter.
