The short answer
An Explanation of Benefits, or EOB, is a statement your health or drug plan sends after processing a claim, showing what the provider charged, what the plan paid, and what you may owe. Importantly, an EOB is not a bill — it is a summary to help you understand how your claim was handled. Reviewing your EOBs lets you confirm you received the services listed, catch billing errors, and track your spending toward your deductible and out-of-pocket maximum. Comparing an EOB to any bill you later receive helps you spot mistakes or fraud.
So an EOB summarizes how your plan processed a claim and what you may owe, but it is not a bill.
How to read it
An EOB typically lists the service, the amount the provider billed, the amount the plan allowed and paid, and your share, along with running totals toward your deductible and out-of-pocket maximum. Check that the services and dates match care you actually received, and note what you owe so you can compare it to the provider's bill. Medicare beneficiaries receive a similar document; our guide to reading your Medicare Summary Notice covers that version, and our glossary defines the terms.
The EOB shows the charge, the plan's payment, your share, and your progress toward your out-of-pocket maximum.
Why it matters
Reviewing EOBs helps you catch errors, verify you were not billed for services you did not receive, spot potential fraud, and track your spending. If an EOB shows a service you did not get, it may signal a billing mistake or fraud worth investigating. Keeping your EOBs and comparing them to bills protects you. Our glossary covers related terms. This is educational information.
The takeaway: an EOB is a summary, not a bill, showing what your plan paid and what you may owe — review it to catch errors, track spending, and spot fraud.
Frequently Asked Questions
What is an Explanation of Benefits?
A statement your plan sends after processing a claim, showing what was charged, what the plan paid, and what you may owe. It is a summary to help you understand the claim, not a bill.
Is an EOB a bill?
No. An EOB is not a bill — it explains how your claim was processed. Any actual bill comes separately from the provider, and comparing the two helps you spot errors.
Why should I read my EOBs?
To confirm you received the services listed, catch billing errors, spot potential fraud, and track your spending toward your deductible and out-of-pocket maximum.
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