What does Texas SB1236 do?
SB1236 fundamentally restructures the contractual relationship between Pharmacy Benefit Managers (PBMs)/Health Issuers and Pharmacies by prohibiting unilateral "adverse material changes" to contracts without written mutual agreement. This legislation voids "amendment-by-notice" practices and severely restricts financial recoupment for clerical errors during audits, shifting significant leverage to network pharmacies. Implementation Timeline Effective Date: September 1, 2025.