All guides · Fundamentals

Fundamentals

Reading your EOB, understanding denial codes, knowing your plan type — the things every consumer should know.

How to appeal a denied health insurance claim

The end-to-end playbook for fighting a health-insurance denial in the United States — what the categories mean, what evidence you need, how the timeline works, and when to bring in help.

What is an EOB? How to read your Explanation of Benefits

Your Explanation of Benefits is the document that tells you what your insurer paid, what you owe, and — when something is denied — why. A field-by-field guide.

Not legal, medical, or insurance advice.

InsureDefense is not a law firm, insurer, medical provider, or claims adjuster. We do not provide legal, medical, or insurance advice. We prepare appeal documents based on the information you provide. We do not guarantee approval, payment, coverage, or reimbursement. For urgent medical situations, contact your doctor, insurer, or emergency services directly.