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Insurance & Medical Bills · Health coverage and bills

Health plan denials, appeals and Independent Medical Review

California2 min readLast reviewed September 30, 2026Find free help

In this guide

  • Most California health plans are regulated by the DMHC; some insurance policies by the Department of Insurance.
  • A grievance usually goes to the plan first, and the plan generally has 30 days to respond (faster in urgent cases).
  • Independent Medical Review is free and its decisions bind the plan.

Who regulates the plan

  • Department of Managed Health Care (DMHC): HMOs, most PPO plans, and Medi-Cal managed care plans.
  • Department of Insurance (CDI): some PPO and other health insurance policies.
  • Federal agencies: many large employer self-funded plans (U.S. Department of Labor) and Medicare (Centers for Medicare & Medicaid Services).

A member card or plan documents usually show which applies. The DMHC Help Center can also tell callers where to go.

How appeals generally work

  1. Grievance with the plan. The member files a grievance or appeal with the health plan, often with a doctor’s supporting letter.
  2. Plan decision. The plan generally must decide within 30 days, or within 72 hours in urgent cases.
  3. State review. If the plan denies or doesn’t respond in time, the member can ask the DMHC or CDI for an Independent Medical Review or file a complaint.

Independent Medical Review

An IMR is available when a plan denies, changes, or delays care as not medically necessary, experimental, or investigational, or denies emergency care payment. Independent doctors review the case. There is no cost, and a favorable decision requires the plan to cover the care.

Time frames (DMHC)

  • Plan grievance decision: generally 30 days; urgent: 72 hours
  • IMR decision: generally 45 days, faster for urgent cases
  • Immediate DMHC help is available for serious and imminent threats to health.

Common questions

What about Medi-Cal fee-for-service or benefit eligibility?

Medi-Cal eligibility and some benefit decisions are appealed through a State Hearing with the California Department of Social Services, a separate process.

Official sources for this guide

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