This Act may be cited as the Fit to Serve Act.

Chapter 49 of title 10, United States Code, is amended by inserting after section 974 the following new section: 975. Prohibition on discrimination on the basis of gender identity (a) Prohibition The Secretary concerned may not, on the basis of gender identity (including a diagnosis or potential diagnosis of gender dysphoria)— (1) prescribe a qualification for service as a member of the Armed Forces; (2) involuntarily separate a member of the Armed Forces; (3) deny medically necessary health care coverage to a member of the Armed Forces; (4) require an individual to serve as a member of the Armed Forces in the sex assigned at birth to the member; (5) deny accession, reenlistment, or continuation of service as a member of the Armed Forces; or (6) otherwise discriminate against a member of the Armed Forces. (b) Gender identity defined In this section, the term gender identity means the gender-related identity, appearance, mannerisms, or other gender-related characteristics of an individual, regardless of the individual’s designated sex at birth..