Patient guide
Can I Get an Outside Reviewer to Look at My Denial? Yes, and the Decision Is Binding on the Plan.
If you have a non-grandfathered health plan and your internal appeal was denied, federal rule 45 CFR 147.136 gives you four months to request an independent external review. A standard review takes up to 45 days, an expedited one up to 72 hours, and the decision binds your plan, not just you.
Reviewed by the CheckMyDenial team, patient billing and appeals. Last reviewed: September 3, 2026.
Short answer: if your health plan is non-grandfathered and your internal appeal was denied, you have the right to ask an outside reviewer, an Independent Review Organization with no relationship to your plan, to look at your claim. Under 45 CFR 147.136, you generally have four months from the date you receive the final denial notice to request it, a standard review takes up to 45 days once the reviewer has your file, and the decision is binding on your plan. This is not a courtesy your insurer is offering you. It is a federal requirement.
Most people never use this right, because most denial letters mention it in one dense paragraph near the bottom and move on. The right itself is specific: how long you have to ask, how long the review takes, what "binding" actually means, and when you can skip ahead to an expedited version measured in hours instead of days. All of it comes from one regulation, and the language below is drawn directly from that regulation's text.
| Step | Deadline or timeframe | Binding on the plan |
|---|---|---|
| Request external review, standard | 4 months from receipt of the final denial notice | N/A, this is the filing window |
| Preliminary eligibility check by plan | 5 business days after the request is received | N/A |
| Standard review decision by the IRO | Up to 45 days after the IRO receives the request | Yes |
| Expedited review decision by the IRO | Up to 72 hours after the IRO receives the request | Yes |
| Cost of the review | Paid by the plan or issuer, not the claimant | N/A |
What is external review, and who qualifies?
External review is a federally required process for group health plans and insurance issuers that are not grandfathered under the Affordable Care Act. Once your plan has denied your internal appeal, which the regulation calls a final internal adverse benefit determination, you have the right to have that decision reviewed by an Independent Review Organization, a reviewer that has no financial relationship to your plan and did not make the original decision. The regulation sets this up in two tracks: if your state runs an external review process that meets the federal minimum consumer protections, your plan follows that state process; if not, the federal process at 45 CFR 147.136(d) applies directly. Either way, the core protections, the deadline and the binding outcome, hold.
How long do I actually have to request it?
Four months. The regulation's federal process states it plainly: a plan or issuer "must allow a claimant to file a request for an external review with the plan or issuer if the request is filed within four months after the date of receipt of a notice of an adverse benefit determination or final internal adverse benefit determination." The regulation even handles the edge case: if there is no matching date four months later, the deadline becomes the first day of the following month, and if that date falls on a weekend or federal holiday, it moves to the next business day. Do not wait for a reminder. Nothing in the process resets or extends this window for you.
Does the plan get to argue with the outcome?
No, and this is the part most people do not expect. The regulation requires the notice of the final review decision to include "a statement that the IRO's determination is binding except to the extent that other remedies may be available under State or Federal law," and it separately preserves your right to keep the claim moving to other remedies if you lose. In practice, if the Independent Review Organization overturns your denial, your plan has to pay or otherwise provide the benefit. The one carve-out in the regulation runs the other direction: a plan can still choose to pay a claim voluntarily even after a review decision that denied it, but it cannot refuse to honor a decision that went against it.
How long does a standard review actually take?
Up to 45 days. The regulation requires the assigned Independent Review Organization to "provide written notice of the final external review decision within 45 days after the IRO receives the request for the external review." That clock starts when the IRO has your completed file, not the day you first mailed something to your plan, so if your review is taking longer than expected, the first question to ask your plan is the exact date it transmitted your file to the assigned IRO.
When can I get an expedited review instead?
Two situations trigger it under the regulation. First, if your denial involves a medical condition where waiting for the standard timeframe "would seriously jeopardize the life or health of the claimant or would jeopardize the claimant's ability to regain maximum function." Second, if the denial concerns an admission, ongoing care, or a service tied to emergency treatment you already received but have not been discharged from. In either case, the regulation requires the IRO to decide "as expeditiously as the claimant's medical condition or circumstances require, but in no event more than 72 hours after the IRO receives the request." If your situation fits either description, say so explicitly and in writing when you request review; do not assume the urgency is obvious from the diagnosis alone.
Does this cost me anything?
No. The federal external review process is explicit that the Independent Review Organization "may not impose any costs, including filing fees, on the claimant requesting the external review." Some qualifying state processes are allowed to charge a small filing fee, capped at $25 per request and $75 per plan year, refundable if you win, and waived for financial hardship, but that is the outer limit the regulation permits, not something you should expect by default.
What do I actually send, and where does it go?
Your denial notice is required to explain how to request external review and should include the contact information for starting the process, whether that runs through your plan directly, a state external review program, or the federal process operated for plans that fall outside state coverage. When you request review, include enough to identify the claim clearly: the dates of service, the provider, the claim amount, and a copy of the final denial notice itself. You are also entitled, on request, to the diagnosis and treatment codes tied to the denial and their plain-language meaning, which is worth asking for before you write your submission so you can address the plan's actual stated reason rather than guessing at it.
What happens if my state runs its own process?
Many states operate their own external review system instead of deferring to the federal one, and the regulation requires any such state process to meet the same floor: at least four months to file, a standard decision within 45 days, an expedited option within 72 hours when medically urgent, no cost to you, and a binding outcome. Your denial notice should identify which process applies to your plan. If it does not say clearly, ask your plan directly which process governs your claim and get the answer in writing.
A note on who we are
CheckMyDenial helps patients read and appeal insurance denials. We are related to a company that does medical-dental billing and reimbursement for patients and practices, and if you ever move from reading to having someone handle a claim for you, that relationship and any fee are disclosed before anything is paid. This page is free, it does not require anything from you, and it will stay that way.
Where this comes from
Everything above is drawn from the regulation itself, 45 CFR 147.136, "Internal claims and appeals and external review processes," specifically paragraph (d), the Federal external review process, and the parallel minimum standards for State external review processes in paragraph (c). The four-month filing window, the 45-day standard decision timeline, the 72-hour expedited timeline, the no-cost requirement, and the binding-decision language are quoted or closely paraphrased from the current regulatory text. HealthCare.gov's consumer explanation of the same process was used to confirm the plain-language summary matches the regulation. If you find something here that is out of date, tell us and we will fix it and change the date at the top.
Questions people ask
Can I get an outside reviewer to look at my denial?
If your plan is non-grandfathered, meaning it is not exempt under the Affordable Care Act, yes. Once your internal appeal is denied, federal rule 45 CFR 147.136 gives you the right to an independent external review by an Independent Review Organization, a reviewer with no relationship to your plan. You generally have four months from the date you receive the final denial notice to request it, and the reviewer's decision is binding on your plan.
How long do I have to request external review?
Four months from the date you receive the notice of the final internal adverse benefit determination, under 45 CFR 147.136(d)(2)(i). If there is no matching date four months out, for example the notice arrived October 30 and there is no February 30, the deadline moves to the first day of the following month. If that date lands on a weekend or federal holiday, it extends to the next business day.
Is the external review decision actually binding?
Yes. The regulation requires the Independent Review Organization's notice to state that its determination is binding, with narrow exceptions, most notably that a plan remains free to voluntarily pay the claim even after a decision against the claimant. In practice this means your plan cannot simply disagree with the external reviewer and keep denying the claim; it has to comply with the outcome.
How long does a standard external review take?
Up to 45 days after the Independent Review Organization receives your request, under 45 CFR 147.136(d)(2)(iii)(B)(6). That clock starts when the IRO gets your completed file, not the day you first submitted your request to your plan. Your plan has five business days after assigning the IRO to send over the documents it used to make the original denial, so ask your plan to confirm the exact date it transmitted your file to the assigned reviewer.
What is an expedited external review, and when do I qualify?
Expedited review is available when your medical condition means the standard 45-day timeline would seriously jeopardize your life or health, or your ability to regain maximum function, or when the denial involves emergency care you received but have not been discharged from. Under 45 CFR 147.136(d)(3), the Independent Review Organization must decide as fast as your medical situation requires, and no later than 72 hours after it receives the request.
Does external review cost anything?
No. Under the federal process at 45 CFR 147.136(d), your plan or insurance issuer bears the cost of the Independent Review Organization, not you. The regulation is explicit that the IRO process may not impose any costs, including filing fees, on the person requesting the review. Some state processes are allowed a small, refundable filing fee capped at $25 per request, but that is the outer limit permitted, never the federal default you should expect to pay.
What if my state has its own external review process instead of the federal one?
Many states run their own external review process, and if it meets the minimum consumer protections in the regulation, your plan follows the state process instead of the federal one. The federal rule requires any qualifying state process to allow at least four months to request review and to make the decision binding, so the deadline and the binding outcome hold either way. Your denial notice should tell you which process applies and how to start it.