How to Tell Whether Your Health Claim Is a Good Candidate for External Review

A health-plan denial can feel final when it lands in your mailbox or portal. In many cases, though, it is not the end of the story. Federal law gives many people the right to ask an independent reviewer to take a fresh look at certain denials after the internal appeal process. That process is called external review. If you want a broader overview first, this guide on what happens after a health-plan denial goes to an independent reviewer can help frame the big picture.

In this post you’ll learn how to tell whether your claim is a realistic candidate for external review, what kinds of denials commonly qualify, what facts tend to matter most, and when attorney guidance may be especially useful.

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Why This Question Matters

External review is not available for every insurance dispute. It tends to be aimed at denials involving medical judgment, experimental or investigational treatment determinations, rescissions of coverage, and certain disputes involving No Surprises Act protections. The Affordable Care Act created broad external-review rights for many non-grandfathered plans, and federal guidance explains that qualifying denials may be reviewed by a state process or a federal one, depending on the plan and the state framework in place. CMS HealthCare.gov

That distinction matters because a lot of denied claims never make it to external review. According to a recent KFF analysis of ACA Marketplace plans’ 2023 data, insurers denied 19% of in-network claims and 37% of out-of-network claims, but consumers appealed fewer than 1% of denied in-network claims, and only 3% of upheld internal appeals proceeded to external review. In other words, many people may have review rights but never get far enough to use them. KFF

What External Review Usually Covers

At a high level, external review often applies when the denial turns on an insurer’s medical judgment, not just a simple paperwork issue. Federal consumer guidance identifies several common categories:

• denials based on medical necessity
• denials involving the appropriateness of care
• disputes about the health care setting
• disputes about the level of care
• denials involving the effectiveness of a covered benefit
• determinations that care is experimental or investigational
• rescissions, meaning retroactive cancellation of coverage
• some disputes over compliance with the No Surprises Act cost-sharing and surprise-billing protections HealthCare.gov CMS CMS CMS PDF

If your denial letter uses phrases like “not medically necessary,” “experimental,” “investigational,” “not appropriate for this setting,” or “not covered at this level of care,” that is often a sign the claim may fit the external-review framework more naturally than a denial based only on clerical problems.

Step 1: Read The Denial Letter For The Real Reason

The first question is not “Was my claim denied?” It is “Why was it denied?”