Health Insurance Denied: How the Appeal Process Works

Getting a letter that says your insurer will not pay a claim can be stressful, especially if you are already dealing with a medical problem. A denial is not always the final word. In the United States, people who have health coverage generally have the right to challenge the decision, and the process follows a set order. Knowing that order helps you respond calmly and on time.

This guide explains the common steps. It does not replace advice about your own plan, and the details can differ depending on whether your coverage comes from an employer, the Marketplace, Medicare, Medicaid, or another source.

Start with the written explanation

When a plan denies a claim or ends coverage, it is generally required to tell you why in writing. Read that letter closely. It usually names the reason for the decision, such as a service not being covered, a missing referral, or a claim that the insurer considers not medically necessary. It should also describe how to appeal.

Keep the envelope, the letter, and any email or portal message. If the letter is hard to follow, ask the insurer to explain the reason in plain language and to put the answer in writing. Your questions and their answers become part of your record.

The internal appeal

The first formal step is usually an internal appeal. The HealthCare.gov page on appealing a health plan decision explains that if a claim is denied or coverage is canceled, you have the right to an internal appeal. In that process, you ask your insurance company to conduct a full and fair review of its own decision.

A written appeal is usually the safest choice. Say which claim you are challenging, include the claim or reference number, and explain why you believe the service should be covered. Attach supporting documents, such as a letter from your doctor, treatment notes, or a copy of the plan rule you think applies. Keep a copy of everything you send and note the date you sent it.

Many people focus on the appeal letter and forget the medical side. A short letter from your provider that explains why the treatment was needed can be as useful as the appeal itself.

External review by an independent reviewer

If the internal appeal does not resolve the problem, many people can ask for an external review. The HealthCare.gov guidance describes external review as a right to take your appeal to an independent third party. Once an external review is in place, the insurance company no longer has the final say over whether the claim should be paid.

External review rules depend on the type of plan and the state where you live, and each process has its own forms and deadlines. Read the instructions that came with your denial. If the letter does not explain the process, ask your insurer or your state insurance department how to request an external review.

Urgent cases

Some situations are urgent, such as a treatment that cannot wait or a medication you are already taking. The HealthCare.gov page notes that if the case is urgent, the insurance company must speed up the internal review process. If you believe your health is at risk, say so clearly when you call or write, and ask whether an expedited review is available.

Urgent does not mean you should wait. Ask for the expedited process at the start, not after the usual timeline has passed.

Gather your records

A strong appeal is built on organized paperwork. Gather these items before you write:

• The denial letter and any earlier explanations of benefits
• Your insurance card and the plan documents, including the summary of benefits
• Itemized bills and the codes listed on them
• Notes from doctors, therapists, or other providers that describe the medical need
• A timeline of phone calls, including the name of each person you spoke with

Store the originals in one place. If you use a folder on your computer, back it up. Good records make it easier for any reviewer to understand what happened.

When a lawyer may help

Many people handle a health insurance appeal on their own, and that is a reasonable choice for smaller disputes. A lawyer may be worth considering when the denied amount is large, when the claim involves a long-term treatment, when the plan is self-funded through an employer, or when a dispute goes beyond an appeal and involves a possible violation of the plan's terms. A lawyer who handles these cases can explain your options under federal and state rules.

For background on choosing a lawyer and understanding fee terms, see our guides.

If cost is a concern, ask about free or low-cost help before you decide. The USAGov legal aid page lists programs that provide free or low-cost legal help, and many of them accept cases involving benefits.

Frequently asked questions

Do I have to appeal a denial?

No one is required to appeal. An appeal is a choice you can make to ask for a second review. Some people decide the denial is correct after they read the plan rules. Others find that a new document or medical explanation changes the outcome.

Can my doctor appeal for me?

Often a provider can help with the appeal, and some plans allow a representative to act for you. Ask the insurer what paperwork it requires for someone else to file or speak on your behalf.

What if I missed the deadline to appeal?

Talk to the insurer right away and ask whether the deadline can be extended for your situation. Then speak with a licensed attorney or legal aid program about your options, since the answer can depend on your plan and state rules.

Does an appeal guarantee that the claim will be paid?

No. An appeal is a review, and no one can promise the outcome. The reviewer may agree with the insurer, or may decide that the claim should be paid in whole or in part.

This page is general information, not legal advice. Laws change and every case is different — talk to a licensed attorney about your situation.