Helping a Parent or Loved One Appeal a Denied Insurance Claim

When an insurance company denies a claim for your parent or loved one, you may be the one who steps in to handle it. Many older adults find the appeals process confusing, exhausting, or simply overwhelming — especially if they're also dealing with a serious illness. As a caregiver, you can be their most powerful advocate.

This guide is written specifically for caregivers: how to get legally authorized to act, what information to gather, how to build a strong appeal, and where to find help.

First: Get Authorized to Act on Their Behalf

Before you can communicate with an insurance company, provider, or government agency on someone else's behalf, you typically need formal authorization. Without it, organizations may refuse to speak with you due to privacy laws.

For Medicare appeals, your loved one can authorize you as their representative by signing a written statement. Medicare has an official form — the Appointment of Representative form (CMS-1696) — that formally designates you to act on their behalf for a specific appeal. This must generally be signed by both you and the beneficiary and submitted with or before the appeal.

For Medicare Advantage and other private plans, each insurer has its own process for designating an authorized representative. Call the member services number on the insurance card and ask what form or process is required.

For HIPAA-protected health records, medical providers need a signed HIPAA authorization from your loved one before releasing their records to you.

If your loved one is incapacitated, a durable Power of Attorney for healthcare or finances — or legal guardianship — gives you the authority to act. If these documents aren't in place, this is worth prioritizing before a health crisis makes it harder to obtain them.

Understanding the Denial

Once you're authorized, request the full denial letter if you don't already have it. The denial letter must state:

• The specific reason for the denial
• The coverage provision or plan rule the insurer relied on
• Instructions and deadlines for appealing

Read it carefully. The denial reason tells you what you need to counter. A denial for "medical necessity" requires different documentation than a denial for "benefit not covered" or "Prior Authorization Denied: How to Appeal" class="auto-link">prior authorization not obtained."

Also request the insurer's clinical criteria — the specific medical guidelines they used to determine that the care wasn't medically necessary. Under federal law, Medicare Advantage plans must provide these if you ask. This lets you understand exactly what the plan was looking for — and gives your physician a roadmap for the Letter of Medical Necessity.

Gathering the Right Evidence

Strong appeals are won on documentation. As a caregiver, you are well-positioned to gather and organize the evidence your loved one needs.

Medical records: Request all records related to the denied service from every relevant provider. This includes physician notes, specialist reports, hospital records, test results, and imaging reports. You typically need a signed HIPAA authorization to obtain these.

Letter of Medical Necessity: This is the most important document in most appeals. Your loved one's physician should write a detailed letter explaining the diagnosis, the treatment that was denied, why it is medically necessary, what evidence supports its use, and what the consequences would be of not receiving it. Be specific in your request to the doctor — ask them to directly address the denial reason.

Physician's office advocacy: Ask the treating physician's staff to review the appeal with you. Many providers have billing or appeals specialists who handle insurance disputes regularly and can be valuable allies.

Your own written statement: A personal letter from you as caregiver, describing your loved one's daily functional limitations, their condition, and the impact of the denied treatment, can be powerful supporting evidence — especially at higher levels of appeal.

Documentation of phone calls: Keep a log of every call you make — date, time, representative's name, and what was said. This record can be important if you need to escalate or file a complaint.

Filing the Appeal

Know the deadline. For Medicare, you generally have 120 days from the denial to file a Redetermination at the first level. For Medicare Advantage, the deadline is 60 days. Mark the deadline on your calendar the day the denial arrives.

Submit everything together. Organize your documents clearly. Write a cover letter that summarizes the situation, identifies the denial reason, and explains why each piece of documentation supports overturning the denial. Number your exhibits.

Send by traceable method. Use certified mail with return receipt, or upload to the insurer's portal and take a screenshot confirming submission. Keep copies of everything you send.

Follow up. Contact the insurer after submission to confirm they received your appeal and to get the expected decision timeline.

When to Escalate

If the first level of appeal is denied, escalate. Many successful appeals happen at higher levels. For Medicare appeals, the Administrative Law Judge (ALJ) level — Level 3 — is particularly favorable to well-documented cases.

If you believe your loved one needs care urgently, you can request an expedited appeal, which requires a decision within 72 hours for Medicare Advantage.

You can also file a complaint with the State Insurance Commissioner for private plans, or with CMS for Medicare Advantage plans, alongside your appeal. These complaints don't resolve the individual case directly but create a record and can prompt faster action.

Free Caregiver Support Resources

• SHIP (State Health Insurance Assistance Program): Free Medicare counseling in every state. Call 1-800-MEDICARE.
• Elder law attorneys: Can help with complex cases, especially those involving large amounts of money or denial of long-term care.
• Area Agency on Aging: Local agencies that can connect caregivers with advocacy, legal aid, and support services.
• Patient advocacy organizations: Many condition-specific organizations (cancer, heart disease, Alzheimer's) have resources specifically for caregivers navigating insurance appeals.

Fight Back With ClaimBack

ClaimBack is designed to make the appeal process manageable for caregivers. Answer a few questions about the denial, and ClaimBack creates a professional appeal letter — organized, evidence-based, and ready to submit. Whether you're helping a parent, a spouse, or another loved one, ClaimBack gives you the tools to advocate effectively.

Start your appeal at ClaimBack

Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Common Reasons Insurance Claims Are Denied