Insurance Denied My Cancer Treatment — What Do I Do Now?

If your insurer just denied coverage for cancer treatment — chemotherapy, radiation, immunotherapy, surgery, or a clinical trial — you need to act fast. Most insurers require appeals within 30–60 days. You have rights, deadlines are real, and the majority of appealed medical necessity denials are overturned. Here's what to do right now.

This Is a Medical Emergency — Request Expedited Review

For cancer treatment, you don't have to wait for the standard appeal timeline. Under ACA regulations (45 CFR §147.136) and most state laws, you have the right to an expedited appeal when a standard timeline could "seriously jeopardize your life, health, or ability to regain maximum function."

Immediately call your insurer and say:

"I am requesting an expedited internal appeal and expedited External Independent Review: Complete Guide" class="auto-link">external review under [state law / ACA regulations] because the standard appeal timeline would seriously jeopardize my health. My oncologist has confirmed this is urgent."

Expedited reviews must be completed within 72 hours (external review) or 24–72 hours (internal expedited). This is not a favor — it is your legal right.

What to Do in the First 24 Hours

1. Get your denial in writing. Call your insurer and request written confirmation of the denial, including the specific reason, the policy provision relied on, and the clinical criteria used.

2. Call your oncologist. Tell them about the denial. They need to:

• Write a letter of medical necessity immediately
• Contact the insurer's medical director directly (physician-to-physician review is often faster than paper appeals)
• Document the clinical urgency in your chart

3. Request a peer-to-peer review. Your oncologist can request a phone call with the insurer's medical director. This often overturns denials before a formal appeal is needed. Oncologists who request peer-to-peer reviews win frequently.

4. Start the formal appeal simultaneously. Don't wait for the peer-to-peer outcome — file the formal appeal while it's happening. Deadlines are absolute.

The Most Common Cancer Treatment Denial Reasons (and How to Fight Them)

"Not medically necessary" Submit: NCCN (National Comprehensive Cancer Network) guidelines supporting your specific treatment, your oncologist's letter citing your TNM staging, pathology reports, and any relevant clinical trial data.

"Experimental/investigational" If the treatment is FDA-approved for your cancer type, provide the FDA approval documentation. For off-label uses, cite peer-reviewed studies. For clinical trials, note that ACA §2709 requires coverage of routine costs in approved clinical trials.

"Prior Authorization Denied: How to Appeal" class="auto-link">Prior authorization required" Argue that for a cancer diagnosis, delays to obtain retroactive authorization are clinically unjustifiable. Many states have laws limiting how insurers can apply prior auth requirements for cancer.

"Out-of-network specialist" If your cancer center (e.g., MD Anderson, Mayo Clinic, Memorial Sloan Kettering) is out of network, argue medical necessity for that specific center's expertise, or request a single-case agreement.

"Step therapy required" (you must try a cheaper treatment first) For cancer, step therapy protocols are often illegal. Many states have "step therapy reform" laws that exempt cancer treatment from step therapy requirements. Check your state.

Your Legal Rights

• ACA §2719: Requires insurers to offer internal and external appeals for coverage denials
• ACA §2713: Requires coverage of preventive services with no cost-sharing
• Mental Health Parity (for psychiatric oncology support)
• State external review: Available after internal appeal fails — an independent reviewer's decision is binding on your insurer
• State insurance commissioner complaint: File simultaneously with your appeal

If You Can't Afford to Wait: Emergency Options

• Ask your oncologist about patient assistance programs — drug manufacturers often provide free medications while appeals are pending
• Contact the cancer center's financial counselor — many have charity care programs
• Non-profit resources: American Cancer Society (1-800-227-2345), CancerCare, NeedyMeds

Fight Back With ClaimBack

ClaimBack generates a cancer treatment appeal letter in 3 minutes — citing NCCN guidelines, ACA regulations, your specific denial reason, and the clinical urgency that demands expedited review.

Start your free cancer treatment appeal →

Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs External Insurance Appeal