Why Few End Up Appealing Denied Health Claims — And How You Can Be the Exception

Every year, millions of Americans receive a health insurance denial. A test, treatment, surgery, hospital bill, or specialist visit is rejected—often without valid justification. But what most people don’t realize is this:

Less than 1% of denied claims are ever appealed, according to the Kaiser Family Foundation (KFF).

That’s not a typo.
Not 20%.
Not 10%.
Less than one percent.

Which means something else:

Insurers count on you NOT appealing.

But here’s the part patients never hear:

When you do appeal, your chances of getting the denial reversed are surprisingly high.

This blog explains why most people don’t appeal, why insurers expect you to give up, and how YOU can be the exception by learning how to appeal a denied claim effectively.
You’ll also learn how to use my FREE Appeal Guide and attorney-drafted DIY appeal letter templates to send a strong, structured appeal letter that gives you a real chance at approval.

The Shocking Truth: Less Than 1% Appeal Their Denied Claims

According to the latest KFF analysis, less than 1% of denied claims under ACA marketplace plans are appealed—even though denial rates can be as high as:

  • 11%

  • 18%

  • 20%

  • Even 30%+ depending on the insurer

This means millions of valid claims go unpaid simply because patients don’t know their rights.

So why do so few people appeal? Below are the real reasons.

❌ Reason #1: People Assume the Insurance Company Must Be Right

Most people trust the insurer’s initial decision. They believe:

  • “If they denied it, I must not be covered.”

  • “Maybe I made a mistake.”

  • “The doctor probably didn’t follow the rules.”

But the truth?

Most initial denials are automatic and lack real medical review.

Many are based on:

  • Missing paperwork

  • Incorrect billing codes

  • Lack of prior authorization (even when requested)

  • Automated system triggers

  • Misinterpretation of guidelines

Your denial DOES NOT mean the care wasn’t medically necessary or covered. It often just means you need to explain it more clearly—and that’s exactly what an appeal is for.

❌ Reason #2: Denial Letters Are Intentionally Confusing

Insurance companies know that if they keep explanations vague, most people will give up.

Common phrases include:

  • “Not medically necessary”

  • “Not covered under your plan”

  • “Insufficient information provided”

  • “Experimental or investigational”

  • “Out-of-network provider not authorized”

None of these mean you’re out of options. They simply describe the insurer’s current opinion—not the final decision.

A denial is NOT final unless you stop fighting.

❌ Reason #3: People Feel Intimidated by the Appeal Process

Many assume appealing is too complex or requires a lawyer. But a health insurance appeal is simply:

  • A letter

  • A few supporting documents

  • Sent to the insurer within their stated deadline

You don’t need legal training.
You don’t need insurance expertise.
You only need a structured approach—which is why templates help so much.

❌ Reason #4: People Don’t Know Their Legal Rights

Under federal law (ACA & ERISA), you have the right to:

✔️ A full and fair internal appeal

✔️ A second, independent external review

✔️ A review by a medical specialist

✔️ The insurer’s internal guidelines

✔️ A written explanation for denial

Insurers very rarely explain these rights in plain language—which is why people don’t use them.

❌ Reason #5: People Think the Appeal Won’t Work

This is the biggest misconception.

Research shows that when people do appeal, many denials get overturned—because the original denial was flawed, incomplete, or automated.

In fact:

A strong appeal letter that includes medical records, doctor statements, and evidence has a high chance of success.

Especially for:

  • Prior authorization denials

  • Medical necessity denials

  • Out-of-network emergency care

  • Preventive care misclassified as diagnostic

  • Billing and coding errors

  • No in-network provider available

Appealing works—if you do it properly. To learn more about how to appeal, get my FREE APPEAL GUIDE HERE.

💡 Why YOU Should Be the Exception

When you appeal:

  • You force the insurer to do real review

  • You gain access to the insurer’s internal guidelines

  • The denial is reviewed by a new medical professional

  • You activate legal protections

  • You dramatically increase your chance of approval

Insurance companies count on silence. Your appeal letter disrupts the denial process and requires them to justify their decision. That’s why appealing is powerful. In my FREE Appeal Guide, I give legal tips on submitting a winning appeal.

Appeal Success Stories

Example #1: Preventive Labs Denied, Reversed After Appeal

A woman received a $500 bill for routine lab work during her annual exam. The insurer denied the claim because the labs were miscoded as “diagnostic.”

She appealed, explaining:

  • The labs were preventive

  • The visit was an annual exam

  • The coding was incorrect

  • ACA requires preventive care coverage

The insurer reversed the denial within 30 days.

Example #2: MRI Denied as “Not Medically Necessary”

A man with chronic back pain had an MRI rejected.
The denial letter was two sentences long.

He appealed using:

  • Orthopedist notes

  • X-ray results

  • Physical therapy failure records

  • Appeal template language requesting “specialist review”

The MRI was approved on appeal.

Example #3: Out-of-Network ER Visit Denied

A teenager fainted while traveling.
The nearest hospital was out-of-network.

The insurer denied the claim.

Her parent appealed using emergency care federal protections that require in-network rates for emergencies.

The insurer reprocessed and paid 90% of the bill.

📝 How to Appeal a Denied Health Insurance Claim (Step-by-Step)

Here are the key denied health insurance claim steps you should follow:

1. Request Your EOB + Denial Letter

This tells you:

  • The denial code

  • The reason for denial

  • Missing documentation

  • Appeal deadline

2. Gather Supporting Evidence

This may include:

  • Doctor’s notes

  • Medical records

  • Lab results

  • Imaging reports

  • Referral notes

  • Billing corrections

  • Prior authorization confirmations

3. Write a Strong Appeal Letter

Your letter must include:

  • Your demographic information

  • Denial details

  • Why the denial is wrong

  • Supporting medical evidence

  • Federal protections (ACA or ERISA)

  • A request for reprocessing

  • A demand for specialist review

This is why templates are so useful.

4. Submit the Appeal on Time

Deadlines are strict.
Missing a deadline kills your appeal.

5. Request an External Review

If the insurer still denies your appeal, you have the right to a third-party, independent review.

External reviewers overturn many denials.

Step 1: Download Your FREE Appeal Guide

If you feel overwhelmed by the insurance denial process, my FREE Appeal Guide gives you:

  • Appeal checklists

  • Step-by-step instructions

  • Sample arguments

  • Questions to ask your doctor

  • Documentation tips

  • Internal vs. external review guidance

👉 Download Your FREE Appeal Guide Here

📝 Step 2: Use a $29 Appeal Template (Most Effective Method)

If you need a customizable ready-to-send appeal letter, my $29 templates give you:

  • Professionally structured legal language

  • Arguments for medical necessity, prior authorization, preventive care, out-of-network denials, and more

  • Fill-in-the-blank sections

  • ERISA and ACA citations

  • Space for medical evidence

  • Simple instructions

👉 Get the $29 Appeal Template Here

This is the fastest, most effective way to become the 1% who appeals—and wins.

Be the Exception

Insurance companies rely on patients giving up. When only 1% appeal, insurers profit from the silence.

But YOU can be the exception.

Appealing a denial increases your chances dramatically—especially when you use:

  • A structured template

  • Medical evidence

  • Your legal rights

  • A clear, powerful letter

Your health is worth fighting for. Your coverage is worth fighting for. And you have the tools to win.

GET STARTED HERE

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Experimental/Investigational Treatment: Evidence That Moves the Needle

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Internal vs External Review: When & How to Escalate