# What to Do When Your Health Insurer Says 'No'
Roughly one in three Americans face a denied health insurance claim at some point. Insurers reject coverage for treatments, medications, and procedures they deem unnecessary or outside plan parameters. The denial lands in your mailbox, and suddenly you face a choice: pay out of pocket or fight back.
Fighting back works. Insurance denials are reversible through formal appeals, and many people win on the second or third try.
Start by reading the denial letter carefully. Insurers must explain why they rejected your claim. Common reasons include lack of medical necessity, missing prior authorization, or the service falling outside your plan benefits. Understanding their rationale shapes your response.
Next, gather supporting documentation. Work with your doctor to obtain medical records, test results, and clinical notes that support the treatment's necessity. Your physician can write a letter explaining why the denied treatment matters for your health. This clinical justification carries weight with insurance reviewers.
File a formal appeal within your plan's deadline, typically 30 to 180 days depending on the denial type. Submit your appeal in writing, not by phone. Keep copies of everything you send. Address the insurer's specific objections point by point.
If your insurer denies your appeal, request an independent external review. Most states require health plans to offer this option. An external reviewer unaffiliated with your insurer examines the case and can overturn the denial.
For urgent situations, ask about expedited appeals. If your health faces immediate risk, insurers must decide within 72 hours instead of the standard 30 days.
Patient advocacy organizations specific to your condition often provide free appeal support. The Patient Advocate Foundation and disease-specific groups have navigated these battles repeatedly and know which arguments resonate with insurers.
Document everything throughout this process. Save dates, names, confirmation numbers