How to read your EOB without the headache

You open your mailbox and there it is: a dense form from your insurance company titled “This Is Not a Bill.” So what is it, and why does it look like one?

That form is your Explanation of Benefits, or EOB. It shows up after you see a doctor, and it explains how your insurance handled the visit. Learning to read it is one of the easiest ways to catch mistakes and avoid overpaying.

Here's how to make sense of it.

First: an EOB is not a bill

This is the most important thing to know. An EOB is a summary, not a request for payment. The actual bill comes separately, from your doctor or hospital. Your job with the EOB is to check the math before that bill arrives.

The key lines, explained

Most EOBs use different words for the same handful of ideas. Here's what to look for:

• Billed amount (or “charged”): What your provider asked for. This is almost never what anyone actually pays.
• Allowed amount: The discounted rate your insurer agreed to. This is the real starting number.
• Plan paid (or “insurance paid”): The portion your insurance covered.
• Your responsibility (or “patient responsibility”): What you owe. This is the number that should match your future bill.
• Deductible, copay, coinsurance: The pieces that add up to your responsibility. (New to these words? See our insurance glossary.)
• Not covered: Anything your plan declined to pay, often with a code explaining why.

How to check your EOB in 4 steps

1. Confirm the visit is real. Right date, right provider, right service. Billing for things that never happened is more common than you'd think.
2. Look for the network status. If an in-network provider was processed as out-of-network, your costs can jump for no reason.
3. Add it up. Plan paid + your responsibility should equal the allowed amount. If it doesn't, something's off.
4. Match it to the bill later. When the real bill comes, the amount should match “your responsibility” on the EOB. If the bill is higher, question it.

When something looks wrong

Errors are common, and you have every right to challenge them. Call the number on your EOB, ask for a plain-English explanation of any code, and request a correction in writing.

This is exactly the kind of thing mhico does for you automatically. When you link your claims, mhico reads every EOB, translates it into plain English, and flags anything that looks off, so you don't have to decode it line by line. Link your claims and try it free.