Billing Error Checklist
80% of medical bills contain errors. Check yours against the 15 most common billing mistakes. Completely free.
Check each item against your bill. Mark any errors found, then generate a dispute letter to contest them.
The same service or procedure is billed more than once on the same date.
How to check: Look for identical line items with the same CPT code and date of service.
A provider bills for a more expensive service than what was actually performed.
How to check: Compare the CPT codes on your bill against the actual services you received.
Procedures that should be billed together as a package are split into separate charges.
How to check: Look for multiple procedure codes that typically go together (e.g., surgical components).
Your name, date of birth, or insurance ID is wrong, causing claim errors.
How to check: Verify your personal information is correct on every page of your bill.
You are charged for a service, supply, or procedure you never received.
How to check: Go line by line and cross-reference with your actual appointment notes or discharge paperwork.
The wrong diagnosis code is used, leading to denied claims or incorrect billing.
How to check: Ask for your ICD codes and verify they match your actual diagnosis.
Facility fees charged as inpatient when you were actually an outpatient or under observation.
How to check: Confirm your admission status. Observation status vs. inpatient has different billing rules.
Basic supplies like gloves, bandages, or saline are billed at inflated prices.
How to check: Look for supply line items and compare against typical market prices.
If you have two insurance plans, the primary/secondary coordination may be applied incorrectly.
How to check: Confirm with both insurers that the coordination of benefits was applied correctly.
An in-network provider bills you for the difference between their charge and what insurance paid.
How to check: Confirm the provider was truly in-network on your date of service and review your EOB.
Medications are listed that you never received or that were charged at the wrong dose.
How to check: Review all medication line items and match against any medications actually administered.
A procedure is billed for more units than were actually performed.
How to check: Check the quantity column next to each CPT code and verify it matches reality.
A typographical error in the CPT code leads to billing for the wrong service entirely.
How to check: Look up any unfamiliar CPT codes online and confirm they match the care you received.
A procedure was cancelled or not performed but still appears on the bill.
How to check: Cross-reference with your appointment history and any cancellation confirmations.
You received only a summary bill. You have the right to an itemized bill.
How to check: If you only received a lump sum, call the billing department and request a complete itemized bill.
Found an Error? Generate a Dispute Letter
Our dispute letter generator creates a professional letter you can send to contest billing errors.
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