An external review is the step after your health plan has denied a claim or treatment and its own internal appeal has not changed the decision: an independent organisation, with no connection to your insurer, reviews the case and decides whether the plan must cover it. It exists so that the final word does not rest with the company that would have to pay. How you request one, and the instructions and deadline that apply to you, are printed in your plan’s denial and appeal letters — those letters, and your state insurance department, are the authority for your case.
Key Takeaways
- External review is an independent check on an insurer’s decision, carried out by reviewers who do not work for your plan.
- It usually comes after the plan’s internal appeal process has finished and the denial still stands.
- The review is typically handled by an independent review organisation assigned through your state or a federal process.
- The reviewer looks at your medical records and the plan’s reasons, and the decision is generally binding on the plan.
- There is a deadline for requesting external review, and it varies — find the one printed in your own appeal letter and act promptly.
- In urgent situations, an expedited (faster) review, and sometimes skipping ahead, may be possible — your letters and state insurance department can tell you if that applies.
Where External Review Fits in the Appeals Process
The appeals ladder has a few rungs, and external review sits near the top. It usually starts when a claim or a request for treatment is denied. Our guide to how health insurance claims work explains how the claim got to that point, and our walkthrough of how to read an insurance denial letter shows how to find the reason the plan gave and the appeal steps it must tell you about. If you appeal inside the plan — the internal appeal — and the plan still says no, the letter telling you that will explain your right to take the case outside the plan. That outside step is the external review.
Our pillar guide to paying for breast cancer care maps the whole financial landscape, appeals included. The point to hold onto is the shape of the process: each denial letter is required to tell you what comes next, so a careful reading of the letter you already have is always the first move.
Who Does the Reviewing
The defining feature of external review is independence. The case is sent to an independent review organisation — a body accredited to do this work, which is not part of your health plan and does not answer to it. Within that organisation, the actual review is done by a clinician in the same or a similar specialty as the doctor whose care is in question, who looks at the medical evidence with fresh eyes.
The reviewer typically considers your medical records, the treating doctor’s notes and supporting letter, the plan’s stated reasons for denying, and the plan’s own coverage rules and medical policies. You — and usually your doctor — can submit information for the reviewer to consider, so a clear letter from your treating team explaining why the treatment is needed for you is a valuable part of the file. Reviews are arranged through your state’s process in many cases, or through a federal process where that applies; which route your case takes is something your appeal letter or your state insurance department can confirm.
Internal Appeal vs External Review
| Feature | Internal appeal | External review |
|---|---|---|
| Who decides | Your health plan itself | An independent review organisation, unconnected to the plan |
| When it happens | First, after the denial | After the internal appeal has finished and the denial stands |
| What is reviewed | The claim, your records, and the plan’s coverage rules | The same file, judged independently against the medical evidence |
| Effect of the decision | The plan can uphold or overturn its own denial | Generally binding on the plan — if the reviewer says cover it, the plan must |
| How you start it | Following the instructions in the denial letter | Following the instructions in the final internal-appeal letter, within the deadline printed there |
How to Request an External Review
- Read your final appeal letter closely. It must explain your external review rights, where to send the request, and your deadline. That letter — not a website’s general description, and not this article — holds the dates that apply to you.
- Act promptly. Request windows are limited and they differ by plan type and state. Treat the deadline in your letter as fixed, and start well before it.
- Gather the file. The denial and appeal letters, your plan’s reasons, medical records, and a supporting letter from your treating doctor explaining the medical need in your specific case.
- Submit the request as directed — to the state agency or address named in your letter — and keep copies of everything you send, with the date you sent it.
- Ask for help if you need it. Your state insurance department’s consumer assistance office, a hospital financial counselor, and the patient advocate services many cancer centers offer can all help you put the request together.
Many people worry that requesting external review costs money or requires a lawyer. In general, there is no meaningful cost to the patient for the review itself, and the process is designed to be used without legal help — though you are free to have a representative, and in some situations an authorised representative or your doctor can submit on your behalf. The federal marketplace site, healthcare.gov, explains appeal rights in general terms and points you toward your state’s process.
Urgent Situations and Expedited Review
Appeals normally move at paperwork speed, but illness does not always wait. Where a delay could seriously jeopardise your health or your ability to recover, an expedited external review may be available — a faster version of the same independent process. In some urgent situations it may also be possible to request external review at the same time as the internal appeal, rather than waiting for the plan to finish first.
The definitions of “urgent” and the way to ask are set out in your plan’s letters and your state’s rules, and your treating doctor’s support matters here: a statement from your doctor that waiting would put your health at serious risk is usually central to an expedited request. If you believe your situation is urgent, say so plainly and early — to your doctor, to the plan, and to your state insurance department — rather than assuming the standard process will move fast enough.
What Happens After the Decision
The independent reviewer issues a written decision explaining the reasoning. If the reviewer overturns the denial, the decision is generally binding on the health plan: it must approve the coverage. If the reviewer upholds the denial, the external review is usually the end of the appeals ladder within the insurance system, though some situations leave other avenues — a further complaint to your state insurance department, or legal advice for questions this general guide cannot answer.
Either way, keep the paperwork. The full file — denial letters, appeal letters, the reviewer’s decision — belongs in your records alongside your explanation of benefits statements, and it matters if related bills arrive later. Our overview of financial help and insurance questions in the United States rounds up the wider sources of help if cost remains a problem after the decision. And if a disagreement began earlier in the process — for example with a treatment that needed approval before it could start — our explainer on prior authorization explains where that step fits.
Rules, deadlines, and processes for external review vary by state, by plan type, and over time, and individual situations differ. Nothing in this article is a substitute for the instructions in your own letters or advice about your own case: your state insurance department and a hospital financial counselor can apply the current rules to your circumstances.
Questions to Ask Your Insurer or State Department
- Has my internal appeal finished, and am I now eligible to request external review?
- What is the exact deadline for my request, and where is it stated in my letter?
- Where do I send the request, and what forms or documents must go with it?
- Can my doctor submit supporting information directly to the reviewer?
- My situation feels urgent — does it qualify for an expedited review, and how do I ask?
- Who can help me prepare the request — a consumer assistance office, a financial counselor, or a patient advocate?
Frequently Asked Questions
Who pays for the external review?
The review is arranged through your state or a federal process, and its cost is not billed to you as a patient — the system is designed so that asking for an independent review is not a financial risk. What you might still face are the ordinary costs of your care itself if the denial is upheld. Your state insurance department can confirm how the process works where you live.
How long does an external review take?
Timelines vary by state and by whether the review is standard or expedited, so this article does not state one — your appeal letter and state insurance department hold the schedule that applies to your case. What you control is your own side: requesting promptly, and sending a complete file, keeps the process from waiting on you.
Can I request external review before the internal appeal finishes?
Usually the internal appeal comes first, but there are exceptions — most notably urgent situations, and cases where the plan has missed its own deadlines or not followed its process. Your final letters and your state insurance department can tell you whether an exception applies to you; it is worth asking rather than assuming.
What are my chances of winning?
No honest figure can be given here: outcomes depend on the treatment in question, the plan’s reasons, and the medical evidence in the file. What can be said is that the process exists because independent reviewers do overturn denials, and a complete file with a clear supporting letter from your treating doctor gives the reviewer the best material to work with.
The reviewer upheld the denial. Is there anything left to do?
Possibly. Options may include a complaint to your state insurance department, help from a hospital financial counselor or charity care programme with the underlying bill, and — for some situations — legal advice. External review is generally the last step of the formal appeals process, but it is not the end of practical help with the cost.
Related Articles
- Paying for Breast Cancer Care: The Complete Guide
- Your Claim Was Denied: How to Read the Denial Letter and Respond
- How Health Insurance Claims Work
- Prior Authorization, Explained
- How to Read Your Explanation of Benefits
- Financial Help and Insurance Questions in the United States
This article is for general educational purposes only and is not medical, legal, or financial advice. It does not replace professional care. Talk to your doctor or care team about your own situation. If you think you may have a medical emergency, call 911.