How to Read Your Explanation of Benefits (EOB)
An EOB can look confusing but it tells you exactly what your insurance paid and what you owe. We break it down line by line.
After visiting a doctor or hospital, you'll receive an Explanation of Benefits (EOB) from your insurance company. It's not a bill — but it shows exactly how your claim was processed. Here's how to read it.
What is an EOB?
An EOB is a document from your health insurance company that explains how a medical claim was processed. It shows the amount billed by the provider, how much your insurance paid, how much was applied to your deductible, and how much you owe. It arrives after any medical service covered by insurance.
Key sections of an EOB
Provider information: who provided the service. Service date and description: what was done. Amount billed: what the provider originally charged. Negotiated rate: the discounted rate your insurer has with the provider. Insurance payment: what your insurer paid. Your responsibility: what you owe (copay, coinsurance, or deductible amount).
Billed vs allowed amount
Providers often bill a 'list price' that is much higher than what insurance actually pays. The 'allowed amount' is the negotiated rate your insurer has secured. You are never responsible for the difference between the billed amount and the allowed amount — that's always written off.
What 'applied to deductible' means
If you haven't met your annual deductible yet, part of the claim cost gets applied to it. This means you pay that portion out of pocket, but it counts toward fulfilling your deductible. Once your deductible is met, insurance starts paying its share (coinsurance kicks in).
What to check on every EOB
Verify the service description matches what actually happened. Check the dates. Confirm the provider is listed as in-network. Make sure the amount you owe matches any bill you receive from the provider. Report discrepancies immediately to your insurer.
Frequently Asked Questions
Is an EOB the same as a medical bill?
No. An EOB comes from your insurance company and explains how your claim was processed. A bill comes from your provider (doctor, hospital) and asks for payment. Always wait for your EOB before paying a provider bill — the amounts should match.
What should I do if my EOB shows a denied claim?
Contact your insurer to understand why the claim was denied. You have the right to appeal denied claims. Common reasons for denial include: service not covered, prior authorization not obtained, or out-of-network provider. Appeal deadlines are typically 180 days.
How long should I keep my EOBs?
Keep EOBs for at least 1 year, or until you've confirmed the corresponding medical bills are paid and reconciled. For tax deduction purposes, keep records for 3 years. If related to a chronic condition or ongoing treatment, keep longer.
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