Explanation of Benefits (EOB)
What does Explanation of Benefits (EOB) mean on a medical bill?
An EOB is the letter or PDF your health plan sends after a provider files a claim for your care. It is not a bill, and paying straight from it is how people end up paying twice. It lists what the provider charged, the discounted amount your plan allows, what the plan paid, and the part it says is yours. The provider's own bill arrives separately and should land on that last number. When the two disagree, the gap is the thing to ask about before any money moves.
What does Explanation of Benefits (EOB) usually cost?
An EOB never asks for money and has no payment stub. The number to hold on to is the patient responsibility line, because that is the amount the provider's bill should match once the claim is done processing.
What should I watch out for with Explanation of Benefits (EOB)?
- A bill with no matching EOB anywhere — ask the provider whether the claim was ever filed with your plan
- A bill larger than the patient responsibility line for the same date — ask the biller which claim they are billing from
- An EOB for a date you were never seen — ask your plan for the claim details before it eats into your deductible
Seeing Explanation of Benefits (EOB) on your own bill?
Paste the whole thing and get every line explained in plain English, with the charges worth questioning marked.
Explain my bill — free previewWritten by us in plain English. We describe codes in our own words and never publish official code-book descriptions.
Educational information only — not legal, medical, or financial advice. Always confirm the details with your provider or insurer.