Relating to the provision of procedures and treatments for gender transitioning, gender reassignment, or gender dysphoria and the use of public money or public assistance to provide those procedures or treatments.

HB 3399 prohibits physicians and health care providers in Texas from performing certain gender transition procedures or prescribing specific treatments for minors (under 18) using public funds. It bans surgeries like hysterectomy, orchiectomy, and mastectomy, as well as prescription drugs that block puberty or cause infertility (e.g., puberty blockers or high-dose hormone therapy). The bill specifically targets Medicaid and public assistance programs, restricting their use for these services for children. Exceptions allow care with parental consent for individuals under 18. The law applies to all public health programs covered under Texas Health and Safety Code Chapter 161.