If you have exhausted your health insurance company’s internal appeals process and received a Final Adverse Benefit Determination, do not despair. You have one of the most powerful, consumer-friendly options in the US healthcare system at your disposal: the External Review.
An external review strips your insurance company of its decision-making power. Instead, your case is handed over to an Independent Review Organization (IRO)—a panel of independent doctors and clinical experts who have no affiliation with your insurer. Crucially, the insurer is legally bound by the IRO's decision. If the IRO decides your treatment should be covered, the insurer generally must follow that decision under the applicable review rules.
Here is what you need to know before requesting external medical review.
When Are You Eligible for External Review?
You cannot request an external review for simple administrative disputes, such as a disagreement over co-pay amounts or policy eligibility. Under the Affordable Care Act (ACA), external review is strictly reserved for denials that involve:
Medical Judgment: Disputes over clinical necessity, appropriateness, setting of care, or effectiveness of a treatment.
Experimental or Investigational Treatments: Denials where the insurer claims a therapy or drug is unproven or not FDA-approved for your condition.
Rescissions of Coverage: Situations where the insurer cancels your policy retroactively due to alleged errors on your application.
Why External Review Can Matter
External review can be powerful because it moves certain disputes outside the insurer. It is most relevant when the denial turns on medical judgment, medical necessity, experimental or investigational treatment, or similar issues described in your denial notice. Outcomes vary by state, plan type, treatment, and record quality, so do not rely on national win-rate claims. Focus on building the clearest medical file you can.
State vs. Federal External Review Systems
The process you follow depends entirely on the type of health plan you have:
1. Fully Insured Plans (State-Level Process)
If you purchased your plan on an ACA exchange or directly from an insurer, you will generally go through your state's Department of Insurance (DOI) or health department.
California: You have 6 months from the date of the final internal denial to request an IMR through the DMHC website (`dmhc.ca.gov` or by calling 1-888-466-2219).
New York: You have 4 months to file a request with the DFS.
Texas: Texas Department of Insurance (TDI) rules require filing within the timeline specified in your final denial letter.
2. Self-Funded Plans (Federal Process)
If you get your health insurance through a medium-to-large employer, your plan is likely self-funded and governed by federal ERISA law. You will use the federal external review process administered by HHS. The deadline to request a federal external review is 4 months from the date of your final internal denial.
Tactical Tips for a Winning Case
To maximize your chances of winning an external review:
Submit New Clinical Evidence: You can submit new documentation that the insurer never saw during the internal appeal. Work with your doctor to obtain updated lab results, new imaging, or letters from specialists.
Demand a Specialty-Matched Reviewer: Under many state and federal guidelines, you have the right to request that your reviewer be a board-certified physician in the same medical specialty as your treating doctor. If your oncologist recommended a drug, the reviewer should be an oncologist, not a general practitioner.
Focus on the record actually reviewed: Ask what clinical notes, test results, and policy criteria were considered. If the denial seems automated or generic, say that the reviewer should consider your individual medical record.
How Caira by Unwildered can help
If you are staring at a denial letter, EOB, policy PDF, bill, or medical record and do not know what to ask next, Caira by Unwildered is AI help for healthcare paperwork. Upload the documents, ask questions, draft next-step messages, and turn the problem into a calmer checklist 24/7. Plans are $21/month, and you can start chatting in 30 seconds at https://caira.unwildered.co.uk.
Useful starting points
This article is general information, not medical, legal, insurance, or financial advice.
