1. Short title This Act may be cited as the Ensuring Military Readiness Act of 2023 . 2. Limitations on military service by individuals who identify as transgender Not later than 90 days after the date of the enactment of this Act, the Secretary of Defense shall prescribe regulations regarding service of individuals who identify as transgender as follows: (1) Persons who identify as transgender with a history of diagnosis of gender dysphoria are disqualified from military service except under the following limited circumstances: (A) Individuals may serve in the Armed Forces if they have been stable for 36 consecutive months in their biological sex prior to accession. (B) Members of the Armed Forces diagnosed with gender dysphoria after entering into service may be retained if they do not undergo gender transition procedures and remain deployable within applicable retention standards for their biological sex. (C) Members of the Armed Forces serving as of the date of the enactment of this Act who have been diagnosed with gender dysphoria may continue to serve only in their biological sex, irrespective of any changes previously made to their gender marker in the Defense Enrollment Eligibility Reporting System (DEERS), and receive medically necessary treatment for gender dysphoria. Such treatment may not include gender transition procedures. (2) Persons who identify as transgender who seek or have undergone gender transition are disqualified from military service. (3) Persons who identify as transgender without a history or diagnosis of gender dysphoria, who are otherwise qualified for service and meet all physical and mental requirements, may serve in the Armed Forces in their biological sex. 3. Revised regulations regarding gender markings Not later than 90 days after the date of the enactment of this Act, the Secretary of Defense shall prescribe regulations updating the Defense Enrollment Eligibility Reporting System (DEERS) to require the gender markers for members of the Armed Forces to match their biological