Prior Auth Denials Hit 12–18% Across Public Plans; 67% Overturned in MA
KFF's first analysis of mandatory 2026 prior authorization reporting reveals wide variation in denial rates across Medicare Advantage, Medicaid, and ACA Marketplace plans, with 12%-18% of standard requests denied and most appealed denials overturned. For healthcare leaders, the data expose care access barriers and administrative friction that vary sharply by insurer.