How Long Does an Insurance Appeal Take?

When your insurance company denies a claim, filing an appeal is often the fastest route to getting coverage reversed — but waiting for a decision can feel agonizing. The timeline depends on the type of appeal, your plan type, and whether an urgent medical situation is involved. Here is a breakdown of what to expect.

Internal Appeal Timelines

An internal appeal is your first step: you ask your insurance company to reconsider its own decision. Federal law under the Affordable Care Act (ACA) sets minimum timelines for most employer-sponsored and marketplace plans:

• Urgent / expedited appeals: The insurer must respond within 72 hours. These apply when waiting for a standard decision could seriously jeopardize your health, life, or ability to regain maximum function.
• Pre-service appeals (before you receive care): Decision required within 30 days.
• Post-service appeals (after you received care and the claim was denied): Decision required within 60 days.

Some states impose stricter deadlines. For example, California requires decisions on expedited appeals within 3 calendar days and standard post-service appeals within 30 days.

If you have a self-funded employer plan governed by ERISA, the federal timelines above apply. Medicare Advantage plans follow their own schedule: standard redeterminations within 60 days, expedited within 72 hours.

External Independent Review: Complete Guide" class="auto-link">External Review Timelines

If your internal appeal is denied — or if you're facing an urgent medical issue — you can escalate to an IROs) Explained" class="auto-link">Independent Review Organization (IRO), which is an impartial third party.

• Standard external review: Decision within 45 days under federal rules (some states are faster).
• Expedited external review: Decision within 72 hours. You can request this whenever delay would seriously harm your health.

IRO decisions are binding on your insurance company in almost all cases.

What Can Slow Things Down?

Several factors can stretch timelines beyond the minimums:

1. Incomplete submission: Missing medical records, physician notes, or a peer-to-peer letter will trigger requests for additional information, pausing the clock.
2. Plan disputes: Some insurers contest whether a case qualifies as "urgent," pushing it into a slower track.
3. State regulatory backlog: If your state's external review system has high volume, assignment of your case to an IRO can take a few extra days.
4. ERISA litigation: If all administrative appeals fail, court cases can take months to years.

How to Keep Your Appeal Moving

• Submit a complete package the first time: denial letter, EOB, supporting medical records, and a physician letter.
• Follow up by phone after submission to confirm receipt and ask for a case number.
• If you have a pending surgery or critical treatment, explicitly request expedited review in writing and explain the medical urgency.
• Keep a written log of every call — date, representative name, and what was said.

Timelines for Government Programs

• Medicare Part A/B: Standard redetermination within 60 days; expedited within 72 hours.
• Medicaid: Varies by state, but must comply with federal due-process rules. Fair hearings must typically be scheduled within 90 days of the request.
• CHIP: Similar to Medicaid timelines.
• VA health care: Appeals through the Board of Veterans' Appeals can take much longer — sometimes over a year — though the RAMP/AMA process has improved this.

After the Appeal Decision

If your internal appeal is upheld (denied again), you generally have 4 months from the date of that notice to request external review. Do not let this window close — external review overturns insurance decisions roughly 40–50% of the time in some states.

If external review also fails, you may have options through your state insurance commissioner, a patient advocate, or an attorney specializing in insurance bad faith.

Fight Back With ClaimBack

ClaimBack's appeal tool auto-generates a customized, deadline-aware appeal letter and guides you through every stage — internal review, external review, and beyond. Stop waiting and start fighting.

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Related Reading

• How to Write an Insurance Appeal Letter
• Internal vs. External Insurance Appeal: What's the Difference?
• Common Reasons Insurance Claims Are Denied