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EOB vs. Medical Bill

Two documents arrive after a medical visit — and they are not the same thing. Understanding the difference helps you know what you owe and why.

What is an Explanation of Benefits (EOB)?

An EOB is a document from your insurance company — not a bill. It explains how your insurer processed a claim: what was billed, what was allowed, what the insurer paid, and what portion is your responsibility. An EOB is for your records.

What is a medical bill?

A medical bill is a request for payment from your provider or facility. It reflects the amount you owe after insurance has processed the claim. You should not pay a bill until you have received and reviewed the corresponding EOB.

Why they may show different amounts

Insurance companies negotiate contracted rates with providers. The billed amount on your EOB may be higher than the allowed amount. The difference is typically written off by the provider. Your bill should reflect only your share of the allowed amount.

What to do if they do not match

If your bill is higher than the patient responsibility shown on your EOB, contact your provider's billing office. Bring both documents to the conversation. Discrepancies are often the result of a billing error or a timing issue with insurance processing.

Protect your privacy: Please contact your medical practice directly about a specific bill or claim. Do not send medical details through this public page.

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