The #1 denial reason — and one of the most winnable

Denied as “not medically necessary”? Prove it was.

It’s the most common denial — and it’s an evidence gap, not a flat no. Paste your denial and see the real reason, your appeal deadline, your odds, and a ready-to-send appeal. Works on any denial.

~50%of appeals overturned
<1%of denials ever appealed
Freeto decode your denial
UnitedHealthcare
Claim CLM-4471 · EOB
DENIED
Reason for denial
✓ What this actually means
—appeal success rate for this denial type
The free decode

Paste your denial. Get the truth, the deadline, and your odds.

Works on denial letters, EOBs, prior-authorization rejections, and appeal responses. Your document text is never stored.

denial_letter.txt
Paste your denial to begin
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Denial decodedDenial
📄What this denial really says
📊Your odds of winning an appeal
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⏱️Key facts & deadline
✉️Your ready-to-send appeal letter
Appeals Department UnitedHealthcare Re: Formal appeal of claim denial — Claim CLM-2026-44718 To whom it may concern, I am writing to formally appeal the denial of the above-referenced claim, which was denied as not medically necessary. I respectfully request that this determination be overturned. The denial states that documentation of conservative treatment was not provided; however, the enclosed records demonstrate that the requested care meets the plan’s clinical criteria for medical necessity...
Pay once · instant letter
The part that actually wins
A complete, ready-to-send appeal citing the right policy language and clinical criteria for your exact denial — generated instantly after payment.
✓Appeal letter tailored to your denial reason
✓The strongest winning argument for your insurer
✓Deadline tracker + external-review path
Founding price — $19 $29 · limited time
Help us learn what actually wins
Appeals take a few weeks. When yours resolves, tell us how it went — it sharpens the odds we show the next person with your exact denial.
We store only what you tell us here — never your document.
Thank you — that genuinely helps. 🙏
Every real outcome makes the next person’s answer sharper.
0%
of US health claims are denied — about 1 in 5
0%
of denied claims are ever appealed
0%
of filed appeals get overturned
0
average amount at stake in a denied claim
The Appealify win-rate index

See your odds before you fight.

Pick your insurer and denial reason. See the appeal-success rate and the angle that tends to win — from public filings, sharpened by real outcomes our users share.

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win rate
Appeal success
Angle that tends to win
Expected recovery if you appeal$0
How we calculate this: seed figures come from public CMS, KFF and state filings — directional estimates, not guarantees — and sharpen each time an Appealify user shares how their appeal turned out.
How it works

Three steps from “denied” to a real shot.

STEP 01
📄
Decode the denial
Paste the letter. We translate the jargon into the real reason, flag your deadline, and surface your odds — free.
STEP 02
✉️
Generate the appeal
Get a ready-to-send appeal that cites the right policy language and clinical criteria for your insurer and denial reason.
STEP 03
📈
Send & track
We help you hit the deadline and escalate to external review, and learn from how it turns out.
Denial guides

A guide for every denial type.

Plain-English guides — what each denial means, why it’s winnable, and how to appeal. Start with yours.

Most commonNot medically necessaryAn evidence gap, not a flat no — prove your care was necessary.Read → Often proceduralPrior authorizationMissing pre-approval is usually a paperwork miss. Often reversible.Read → Emergency groundsOut of networkChallenge on emergency or network-adequacy grounds for in-network rates.Read → Evidence-ledExperimentalCounter with peer-reviewed evidence, FDA status, and guidelines.Read → Easiest to fixCoding or billing errorUsually a corrected code and resubmission — highest success rate.Read → Check ACAPre-existing / exclusionOn ACA plans most pre-existing exclusions aren’t even allowed.Read →
Why you can trust this

Built on real outcomes, not guesses.

🔒Your document is never stored
Your denial text is sent to our AI provider only to analyze it, then discarded. We keep just anonymous metadata — never the letter.
📊Sourced, then sharpened
Win rates start from public CMS, KFF and state filings and improve with every outcome users choose to share. Estimates are labeled as estimates.
🤝Outcomes only with consent
We learn what wins only from outcomes you opt to tell us. Your email is saved solely if you ask us to check in.
⚖️Guidance, not legal advice
Appealify helps you understand and respond to a denial. It is not a law firm and does not guarantee any outcome.
Questions

Before you start.

Is it worth appealing a denial?
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Usually yes. Roughly half of properly filed appeals are overturned, yet fewer than 1% of denied claims are ever appealed — most people leave money on the table by not trying.
Is my denial letter kept private?
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Your denial text is sent to our AI provider purely to analyze it and is never stored. We keep only anonymous metadata to improve the tool. Your outcome and email are saved only if you choose to share them.
Does Appealify guarantee my claim will be approved?
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No. Appealify gives you informational tools and a strong, tailored appeal — but no service can guarantee an insurer’s decision. Outcomes depend on your plan, your records, and your circumstances.
How much does it cost?
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Decoding your denial is free. Generating the full ready-to-send appeal letter is a one-time payment — currently $19 as a founding price. No subscription.
Contact

Questions? Reach out.

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Please note. Appealify provides informational tools to help you understand and respond to insurance denials. We are not a law firm, insurance company, or medical provider, and we do not guarantee that any appeal will be approved. Appealify does not provide legal or medical advice, and using it — or contacting us — does not create an attorney–client or provider relationship. You remain responsible for your own appeal and the decisions you make. Outcomes depend on your plan, documentation, and circumstances.

A denial is a first offer, not a verdict.

Most people never appeal. The ones who do win about half the time. See where you stand — it takes thirty seconds.