How to Appeal a Health Insurance Denial: A Practical Checklist

A health insurance denial is not always the final decision. If a plan refuses to pay for care or ends coverage, the notice should explain why and how to challenge the decision. The exact rules depend on the plan and situation, so read the notice carefully and act within its stated deadline. Federal consumer guidance describes internal appeals and, in many cases, independent external review.

Start with the denial notice

Check what service or claim was denied, the stated reason, the date of the decision, and the filing instructions. An explanation of benefits is not always the formal denial; request the actual decision letter if you do not have it. Call the number on your insurance card to confirm the correct process, where to send materials, and whether an expedited review is available for urgent care. Keep a dated note of each call and the name or reference number provided.

Build a clear record

Save copies of the notice, relevant bills, medical records, referral or authorization documents, and the plan language involved. Ask the clinician who recommended the care whether they can explain its medical purpose or provide supporting records. Send copies rather than irreplaceable originals, follow the plan's submission method, and keep proof of delivery. A short cover letter can identify the member, claim, decision being challenged, and requested outcome.

Know that timelines differ

HealthCare.gov describes a 180-day deadline for many internal appeals and a four-month window for federal external review, but these timelines may not apply to every plan or decision. Urgent cases may have different procedures. Verify deadlines in your own notice and with your state insurance department or consumer assistance program. Do not delay necessary care while disputing payment; ask the clinician about clinical options and costs separately. This guide is organizational help, not legal advice or a promise that an appeal will succeed.

Sources and further reading

• How to Appeal an Insurance Company Decision — HealthCare.gov.
• Internal Appeals — HealthCare.gov.
• External Review — HealthCare.gov.

Health disclaimer

This article is for general education only. Its information and suggestions are not medical advice, diagnosis, or treatment and may not be right for everyone. Ask a qualified health professional for advice that fits your health, medications, and needs before changing your diet, exercise, supplement use, or care.