External review: how to escalate a denied appeal
Denied again after an internal appeal? Don’t stop there. An external review hands your case to an independent body outside your insurer — and its decision is binding. This is where roughly half of denials are overturned.
What external review is — and why it matters
After you’ve used your insurer’s internal appeal, you can take your denial to an external review: an independent organization, outside the insurance company, that re-examines the decision. The key fact most people miss is that the result is binding — if the reviewer sides with you, your insurer must cover the claim.
It works. KFF’s analysis found that roughly half of external review decisions overturn the original denial — yet only a tiny fraction of denied claims ever reach this stage. That gap is opportunity.
How to request one
- Finish the internal appeal first (in most cases) and get the final denial in writing.
- Read the final notice — it must explain how to request an external review and the deadline (generally within 4 months).
- Submit your request through the process named in the notice — this may be a state external-review program or the federal (HHS-administered) process, depending on your plan.
- Send your strongest evidence — records, guidelines, and a physician letter tailored to the denial reason.
When delay could seriously harm your health, you can request an expedited external review — decided in about 72 hours — and you may be able to run it at the same time as your internal appeal rather than waiting.
Make your case count
An external reviewer looks at the medicine and the evidence. Lead with the argument that fits your denial — medical necessity, experimental/investigational, and the rest are covered in our main appeal guide. IntelClaim can help you organize it, free.
Frequently asked questions
What is an external review?
It’s an independent review of your denial by reviewers outside your insurance company, available after you’ve completed the insurer’s internal appeal. The external reviewer’s decision is binding — the insurer must honor it.
How often do external reviews overturn denials?
Roughly half of external review decisions overturn the initial denial, according to KFF’s analysis of Marketplace plans — yet very few people use this step.
How long does an external review take?
Standard external reviews are decided within about 45 days of the request. Expedited reviews for urgent situations are decided within about 72 hours.
Does an external review cost anything?
No. Requesting an external review is free, and IntelClaim is free to help you prepare your materials.
Prepare your external review — free
IntelClaim helps you organize your argument and evidence for an independent reviewer. Free, purpose-built, self-help.
IntelClaim is a self-help tool — not legal, medical, or insurance advice — and does not guarantee any particular outcome. Information on this site is general and may not reflect the rules of your specific plan or state. Always read your own denial letter, plan documents, and the deadlines that apply to you, and consider professional advice for your situation. No PHI is collected on this marketing site.