Improving Data on the HIV Epidemic in New York City by Identifying Transgender Persons in Medicaid in 2013-2017.

We identified a large number of transgender persons in Medicaid, many of whom were PWH. We saw a sizeable increase over the 5-year period, likely due, in part, to expansion of Medicaid policy to cover gender-affirming health care. Given the high proportion of transgender PWH accessing Medicaid, Medicaid claims data are a valuable source of health information for the transgender population, a group that is often difficult to identify due to issues of underreporting, stigma, reduced access to appropriate care, and misgendering by health care personnel.