MO SB1190

Extends the statute of limitations for malpractice claims related to gender transition surgery, cross-sex hormones, or puberty-blocking drugs to 15 years from the date of discovery of injury, compared to the standard 2-year limitation for other medical malpractice claims

Creates a new statutory cause of action (Section 538.212) specifically for damages arising from gender transition services, effective for actions filed after August 28, 2026

Removes existing damage caps for gender transition-related malpractice claims, establishing a minimum recovery of $500,000 and requiring treble damages (3x economic, noneconomic, and punitive damages), plus attorney's fees and court costs

Voids any liability waivers signed by patients for gender transition surgeries, services, cross-sex hormones, or puberty-blocking drugs

Maintains the existing 10-year outer limit for standard medical malpractice claims while explicitly exempting gender transition-related claims from this cap