What are EOB-rejected charges on a medical bill?
Last reviewed 2026-07-15
An EOB-rejected charge is a line your insurer's Explanation of Benefits did not cover — denied, disallowed, or applied to a contractual adjustment — that a provider then still bills to you. Your EOB is not a bill; comparing it to the provider's bill shows which charges you may not actually owe.
Your Explanation of Benefits (EOB) shows what your insurer was billed, what it paid, what it adjusted away under its contract with the provider, and what it says you owe. A provider bill that charges you for amounts the EOB marked as a contractual adjustment or denied can be a billing error.
Line up the EOB against the provider bill, date by date and code by code. If the provider is billing you for something the plan already wrote off, or for more than the EOB says is your responsibility, that gap is worth questioning before you pay.
The federal No Surprises Act (effective January 1, 2022) generally limits many out-of-network providers to your in-network cost-sharing amount for emergency care and for certain services delivered at in-network facilities, so a balance bill above that amount is often worth questioning.
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