Common Medical Bill Errors and How to Dispute Them

A substantial portion of medical bills are reported to contain errors (per Medical Billing Advocates of America-published surveys)

Studies from Equifax, the Medical Billing Advocates of America, and hospital audits consistently find error rates between 30% and 80% on itemized medical bills. The errors are rarely random — they tend to favor the provider.

Top 10 Medical Billing Errors

1. Duplicate charges for the same procedure or medication
2. Unbundling — billing lab panels as individual tests
3. Upcoding — using a higher-reimbursement procedure code than performed
4. Wrong quantity — billing 10 units of a medication when 1 was administered
5. Facility fees on services that do not qualify as hospital-based
6. Observation vs. inpatient misclassification
7. Out-of-network charges inside in-network facilities (No Surprises Act violations)
8. Services never received — phantom charges from other patients' accounts
9. Preventive care wrongly billed as diagnostic (shifting 0% to 20% coinsurance)
10. Canceled services still on the bill

The Dispute Process

Always request an itemized bill (not a summary). Compare against your EOB. Write a dispute letter citing specific line items and requesting corrected coding. Send certified mail. If the provider refuses, escalate to your state Attorney General or file a Consumer Financial Protection Bureau complaint.

How Medigami Helps

Medigami's free AI bill scanner automatically detects all 10 of the above error patterns, generates a line-by-line dispute letter, and tracks the provider's response — no signup required.

Educational information only. Not legal, medical, or insurance advice. Statutes, deadlines, and eligibility thresholds vary by plan type and state — consult a licensed attorney, state-certified insurance counselor, or nonprofit patient advocate about your specific situation.

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