Learn · Nov 10, 2026 · Not legal advice
Common medical billing errors, as questions to ask
Look for repeated lines, dates that don’t match, missing insurance adjustments, and totals that don’t add up. Treat each as a question for billing, not proof of an error.
What to look for
- The same line twice. Ask: “Is this a second service or a duplicate entry?”
- A date that doesn’t match your visit. Ask for the record of that date.
- A summary line with no itemization. Ask for the detail with billing codes.
- A balance that doesn’t equal your EOB share. Ask which claim decision they used.
- A missing payment or adjustment. Ask for the ledger.
Some repeated lines are legitimate, such as two units of the same item. A high price isn’t an error either. Bill Check flags these patterns on your device and words them as questions.
Line [X] appears twice on [date]. Can you confirm both are separate services and send the record supporting each?
Common questions
Can I tell if a code is wrong?
Usually not without a professional. Ask billing to explain the code and compare it with your EOB.