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A medical bill you cannot make sense of

A medical bill and an explanation of benefits (EOB) are two different documents describing the same care. The bill is what the provider says you owe. The EOB is what your insurer says it processed, paid, and assigned to you. When the two disagree, or when either one lists care you do not recognize, the fix starts with comparing them line by line, not with paying or panicking.

The documents you will see

The order to work in

  1. Request the itemized bill; summaries hide the errors.
  2. Match each billed line to the EOB: dates, codes, amounts billed, allowed, paid, and assigned to you.
  3. Flag the mismatches: duplicate lines, services you did not receive, amounts that exceed the EOB's patient responsibility.
  4. Ask the provider's billing office, in writing, to explain or correct each flagged line.
  5. If insurance processed it wrong, open the insurer's appeal process and note its deadline from the EOB or denial letter.

Deadlines, and where they live

Insurer appeal windows are set by your plan and printed on the EOB or denial notice; many plans allow 180 days from the notice, but your document controls. Balance-billing protections under the federal No Surprises Act cover many emergency and out-of-network situations; the official overview is at healthcare.gov. Provider billing offices also work to their own timelines, so written questions early beat phone calls late.

Primary source: Consumer Financial Protection Bureau, medical billing guidance.

The kit that does this work with you

Medical Bill and Insurance Denial Review Kit cover

Medical Bill and Insurance Denial Review Kit: Three documents, three stories: the hospital's bill, the insurer's EOB, and the denial letter. Guide, editable workbook, and letter templates, $49.

See what's inside the kit

New to PocketBack? Start with The Paperwork Audit, our free checklist covering six everyday documents, this topic included where it fits.

Scope: PocketBack kits are educational self-help resources. They are not legal, tax, financial, or medical advice, and PocketBack does not represent you or act on your behalf. Rules and procedures vary by state, plan, and situation and change over time; verify current rules with the official source before you act. No outcome is promised.