March 24, 2026March 26, 2026Claims Denials and Appeals in ACA Marketplace Plans in 2024 Private insurance by .This brief analyzes federal transparency data published by CMS on claims denials and appeals for Marketplace plan offered on HealthCare.gov in 2024, and finds insurers denied 19% of in-network claims. Consumers rarely appeal denied claims. Check your inbox or spam folder to confirm your subscription.