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When Your Health Insurer Won't Pay a Claim

The steps to take to try and get that denial decision reversed

By Cameron Huddleston

When Jeannine Cain's 20-year-old son complained to her about feeling fatigued, having a headache and a stiff neck, she told him to see a doctor. She worried he might have spinal meningitis. However, it was March 2020, and the U.S. had gone into lockdown to stop the spread of the coronavirus. So, getting a doctor's appointment was a challenge.

A man paying for a medical bill. Next Avenue, health insurance claim, medical bill, denied claim
Credit: Getty

Her son went, instead, to an urgent care clinic, but was turned away because it wasn't equipped to diagnose or treat meningitis. His next stop was the emergency room, where his blood was drawn and a spinal tap was performed. Fortunately, he didn't have meningitis. The diagnosis was "other viral syndrome," Cain said.

If you or your parents are ever hit with a surprise medical bill the insurer refuses to pay, you don't have to take "No" for an answer.

The news from her son's health insurance company wasn't so good, though.

The insurer denied the claim, and her son was going to be stuck with a $14,000 bill — that is, if Cain hadn't used her years of experience working in medical claims to appeal its decision. Through Cain's persistence and an appeals letter she wrote, she was able to get the health insurer to reverse its denial of her son's claim and he was off the hook for the $14,000 bill.

If you or your parents are ever hit with a surprise medical bill the insurer refuses to pay, you don't have to take "No" for an answer. Cain offers these tips to appeal a denied health insurance claim — and the letter she wrote to appeal the denial.

Why Health Insurers Deny Claims

There are a variety of reasons a health insurer or Medicare (the federal government's health insurance program for adults 65 and older) might deny a claim. According to a Kaiser Family Foundation analysis of claims data for plans offered on, the following are the top reasons for denials:

  • 18% of claims were denied because the service provided wasn’t a covered service under the plan
  • 9% of denials were because the treatment didn’t have a required referral or preauthorization
  • 1% were denied because the care wasn’t deemed medically necessary
  • 72% were denied for other reasons

Those "other reasons" can range from the wrong billing codes or primary insurance on a claim to duplicate claims for the same service to visits to out-of-network providers, said Cain, who worked in billing for medical providers and now is a business analyst at Ciox Health.

Her son's claim was denied because, according to the insurer, he received care in the emergency room but had a non-emergent diagnosis. 

Determine Whether You Can Appeal the Denial

If your health insurer notifies you that it has denied a claim, you should receive an Explanation of Benefits document that spells out why. Make sure you understand the reason for the denial, which might require you to call your insurer and ask a representative to explain in detail why the claim was denied, Cain said.

Be sure to write down the representative's name, take notes and keep asking questions until you fully understand the reason for the denial and whether there is any room to appeal the decision, she said. 

For example, if the issue was a clerical error such as a wrong billing code, you might be able to clear it up with your phone call. On the other hand, if the service wasn't covered by your insurance plan, you likely don't have room to appeal. 

If the reason for the denial isn't so black and white, ask to speak to a manager. That's because customer service representatives tend to treat insurance policies and procedures as the law, Cain said. You might have more luck getting the outcome you want from a manager.

If not, you'll need to build your case for an appeal.


How to Appeal a Denied Claim

To begin an appeal, ask the insurance representative to explain the insurer's appeals process or check the company's website or your policy for details. Typically, the process involves writing a letter to the insurer. In particular, Cain said, you'll want to find out to whom you should send the letter, what information to include and what sort of supporting evidence you need to provide. 

Cain recommends taking the following steps as you craft an appeal:

First, get a copy of your medical record from your health care provider. Cain said this will help you recreate the story of why you sought treatment and what sort of treatment you received.

For example, her son's emergency room claim was denied because he was diagnosed with a non-emergency condition. However, his medical record showed that he had symptoms suggesting he needed immediate care.

Let the insurer know specifically what you want to achieve. Don't simply lodge a complaint.

Offer as many details in your appeal as possible. Include the name, date of birth and insurance policy number of the person whose claim was denied; date of services provided; name of the provider and insurance claim number. Explain the circumstances surrounding the condition that required treatment; why the treatment or procedure in the denied claim was necessary and why the claim should be paid under the insurance policy.

Provide evidence to support your appeal. You could include a letter from the medical provider explaining why treatment was necessary. Cain included in her appeal information from the Centers for Disease Control and Prevention about meningitis symptoms to show that her son had similar symptoms that prompted him to seek emergency care.

She also included the COVID-19 disaster order that essentially shut down the state of Texas, where her son received care, to prove he had limited options for care beyond the emergency room. 

Explain what outcome you want. Let the insurer know in the appeals letter specifically what you want to achieve. Don't simply lodge a complaint. 

Get help. You may be able to get assistance in crafting your appeal if your state has a Consumer Assistance Program. You also could reach out to your state insurance commissioner. If you or your parent you're helping with an appeal has coverage through Medicare, you can get help through the government's Medicare Beneficiary Ombudsman.

Keep detailed records. Create a file for all documents you receive from the insurer and health care providers. Keep a log of every call and conversation you have related to the claim with the date and time of the call; the name of the person with whom you spoke and the outcome of the call.

Follow up with the insurer to make sure your letter was received and to check on the status of the appeal. If your insurer denies your appeal, you may be able to request an external review through your state's insurance commission. 

Editor’s note: This article previously appeared on

Cameron Huddleston is a family finances expert at and the author of "Mom and Dad, We Need to Talk: How to Have Essential Conversations With Your Parents About Their Finances." You can learn more about her at or follow her on Twitter @CHLebedinsky. Read More
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