California insurance appeal rights
California has some of the strongest patient appeal rights in the country, administered jointly by the Department of Managed Health Care (DMHC) and the California Department of Insurance (CDI).
Internal appeal rights
Patients have 180 days from a denial to file an internal appeal, and an additional 6 months after final internal denial to request an Independent Medical Review (IMR) — California's external review mechanism.
External review
California's IMR process is administered by independent physician panels under DMHC oversight. IMR overturns a meaningful share of medical-necessity denials and is binding on the carrier when the patient prevails.
CA regulator
California Department of Managed Health Care (DMHC) — official site
Notable
- Independent Medical Review (IMR) is free to the patient.
- DMHC Help Center: 888-466-2219.
- Mental health parity is enforced more aggressively than the federal floor.
- California-specific GLP-1 coverage rules vary by plan; many denials reverse on IMR.
Filed a denial in California?
We work under CA rules. Send your denial letter and we'll structure the appeal under the strongest available state and federal protections.
Send my denialState law information is provided for general guidance and is not legal advice. Confirm with your state regulator or a licensed attorney for your specific case.