Denied Claims Win on Appeal Far More Often Than Practices Fight Them. Here Is Why.

Let me tell you what happens at 4:47pm in a dental practice on an ordinary Thursday.

The office manager pulls up the EOB. Claim denied. Reason code: “other.” Not wrong code, not missing preauth, not ineligible patient. Just “other.” She flags it in the system, moves on to the next one, and goes home.

That claim was legitimate. The work was done. The patient was covered. And nobody is ever going to look at it again.

This happens in your practice. You know it does.

I am going to be careful with that number, because being careful is the whole point of this page. It is a Medicare Advantage figure. There is no equally audited, equally public dental equivalent, so I will not dress it up as one. What it proves is directional and it is damning enough on its own: in the one place where somebody actually measured, most denials that got fought were overturned, and almost nobody fought. Dental’s incentive structure is the same one. Your own overturn rate is a number you can only get by appealing your own denials and tracking what happens.

The Denial Machine Is Not Broken. It Is Built This Way.

Here is the part that should make you angry.

Insurance companies do not deny your claims only because they are wrong. They deny claims because they know most will not be fought. The model leans on one bet: that your front desk is too busy, too undertrained, or too burned out to pick up the phone and push back.

That bet pays off the large majority of the time.

And we have at least one documented look at how such a bet gets placed at scale. In 2023, a ProPublica investigation reported that Cigna’s internal software, called PxDx, was used to reject over 300,000 payment requests in a two-month period, with an average review time of about 1.2 seconds per claim. Not minutes. Seconds. A class-action lawsuit followed in California, and regulators took interest.

That is not dental, and I am not going to claim it is. It is a window into the economics: when denial is nearly free and appeal is expensive, denial scales.

Here is the pattern the dental data does show, stated as pattern rather than as a fabricated statistic.

Claims get denied on first submission for reasons that are often fixable. Not always because the claim was bad. Incorrect codes, missing pre-authorizations, and the catch-all “other” bucket drive a large share.

Many denied claims are never resubmitted. Not because the claim was bad. Because nobody had the time to sit on hold, pull the notes, draft the narrative, and resubmit. So the write-off happens. Silently.

A large share of plan-reported denials are classified as “all other reasons.” Not a specific code. Not a specific error. Just a bucket labeled “other” that nobody is required to explain.

Think about that. An insurer can deny a claim, label the reason “other,” and bet correctly that most practices will never ask a follow-up question.

Your Practice Is Leaking Money You Already Earned

I am not going to hand you an industry-wide dollar figure here, because the honest number is the one from your own books, not a headline extrapolation.

So run it on your practice. What does your denial rate look like? What did you write off last quarter? What would happen if someone on your team spent a few hours a week doing nothing but fighting denied claims?

Practices that build systematic denial recovery generally report recovering collections that were already earned and already billed, and drawing down the pile labeled “denied.” The money is not new business. It is money you produced, billed correctly, and got told “no” on. The size of that pile is a number you can pull; it is not a number I should invent for you.

CDT 2026 Just Made It Worse

If you have not updated your CDT codes for 2026, you are set up for a rough quarter.

The 2026 CDT code set released updates across digital dentistry, preventive, restorative, and surgical categories. If your billing software is running last year’s codes, or your front desk is selecting codes from muscle memory, you are submitting claims that will be automatically denied.

Nobody calls you to tell you your code is wrong. The claim just comes back denied. Your team logs it. Files the next one. The leak gets wider.

This is not incompetence. Your team is doing the best they can with a system that changes the rules every January and bets that nobody will notice until spring.

The Asymmetry Is the Point

Fighting a single denied claim is real work. Pull the chart. Find the EOB. Call the insurer. Wait on hold. Get transferred. Explain the situation. Get told to resubmit with additional documentation. Hang up. Write the narrative. Resubmit. Wait.

Your office manager has a long list of other things to do today. So the claim sits. And the money you earned becomes money you effectively donated to the insurer.

Here is what should bother you about that. The insurer spent close to zero effort deciding to deny — a rule triggered, a code flagged, often no human in the loop. But to reverse that denial, your team has to spend real time proving the work was legitimate. It costs them almost nothing to deny. It costs you real labor to fight. That asymmetry is not a bug in the system. It is the system.

Why Your Front Desk Cannot Fix This

Your front desk person is not a billing specialist. They are answering phones, checking in patients, verifying insurance, handling emergencies, managing the schedule, and somehow also supposed to be an expert in CDT code changes, payer-specific documentation requirements, and appeal-letter writing.

That is not a job description. That is a setup for failure.

And turnover in that role is real. When a front-office person leaves, the institutional knowledge of which codes get denied by which payers, which documentation each insurer requires, and which appeals actually work walks out the door with them, and the denial pile gets taller. Meanwhile the administrative load keeps growing faster than the team that handles it.

The practices that recover the most revenue from denied claims do one of two things.

Option 1: Dedicated denial recovery. Someone on your team whose job, for a set block of time each week, is nothing but fighting denied claims. Not answering phones. Not checking in patients. Fighting claims.

Option 2: Outsourced recovery built in. A team that does nothing but this, across many practices, that knows each payer’s denial patterns, appeal requirements, and documentation triggers.

Either way, the answer is the same: someone has to fight. Because the system is counting on the fact that nobody will.

The Number You Need to Know

Pull your EOBs from the last ninety days. Count the denials. Add up the dollar amounts. That is your number.

That number is what is sitting in a pile labeled “denied” that nobody is touching. The recoverable share of it, the part that would win if someone filed, is a business decision you are making every day by not making a decision.

If you want the movement behind this, the argument that everyone has an insurance plan and almost nobody has a health plan, that lives on Health Starts From The Mouth. This page is the operator version: your denials, your dollars, your recovery. If you are holding a patient’s denied bill rather than a practice EOB, that goes to CheckMyDenial, where a denied claim gets read for free.