80% of hospital bills contain errors. Find yours, and recover what's yours.
Upload your bill and get a full audit report with a dispute letter ready to send, in under 2 minutes. No account required.
Your audit results
Memorial Hospital, March 2026
Duplicate charge, Room and Board
Recover $840Upcoding suspected on inpatient visit code
Up to $320No Surprises Act may apply
ReviewWhat the data says
Medical billing errors are the norm, not the exception.
80%
of hospital bills contain at least one error
Source: Medical Billing Advocates of America
$1,300
average overbilling on hospital stays over $10,000
Source: NerdWallet
49%
of Medicare claims contain billing errors
Source: KFF
What we can share about the claims we reviewed
Anonymized, aggregated findings from users who chose to share feedback. No personal or medical data is stored or shared.
How it works
Three steps. Under 2 minutes.
Upload your bill
PDF or photo. One bill or several from the same medical episode. We accept any format.
We scan for 6 error types
Our AI reviews every line and charge against billing benchmarks and rules. Duplicate charges, upcoding, unbundling, drug markup, and more.
Get your report and dispute letter
A full audit report with errors identified by confidence level, plus a dispute letter ready to send to your provider.
Already paid your bill? You may still be able to dispute. Most states allow up to 12 months. Learn more
What we check
Six error types. Every line of your bill.
Duplicate charges
The same service or item billed more than once for the same visit.
Upcoding
A service billed under a more expensive code than the one actually performed.
Unbundling
Services that should be billed together are split into separate charges to increase the total.
Cancelled services billed
Procedures that were ordered but never performed, still appearing on your bill.
Drug markup
Drug charges priced against NADAC (retail) and ASP (clinician-administered) benchmarks.
In/out-of-network misclassification
In-network providers billed as out-of-network, triggering higher patient costs.
Our packages
Transparent pricing. No percentage of your recovery taken.
Single audit
$25
Less than [X]% of the average reimbursed claim
- One medical episode
- Upload one bill or several from the same stay
- Full audit report PDF
- Dispute letter included
- Money-back guarantee
Multi-bill pack
$75
4 full audits, valid 12 months
Pay for 3, get the 4th on us
- 4 separate medical episodes
- One free claim code sent per additional audit
- Full audit report PDF per episode
- Dispute letter per provider
- Money-back guarantee
No insurance?
We have a dedicated package for you.
Uninsured patients are often billed at the highest rates. Our $19 audit includes your rights as a self-pay patient and a charity care request letter.
Our commitments
Built in your corner.
Your bill is never stored.
We analyze your document and discard it immediately. Nothing is saved to any database. No account required.
Not satisfied? Get your $25 back.
If our AI missed something, contact us at support@billsurgery.com and we will refund your payment. No questions asked.
For information only.
This tool does not constitute medical, legal, or financial advice. Results are for informational purposes only. Always consult a qualified professional.
Who it is for
If you received a medical bill, this is for you.
After surgery or hospitalization
Complex multi-provider bills with high dollar amounts are where errors most commonly hide.
Got a surprise out-of-network bill?
You may have rights under the No Surprises Act. We identify violations and prepare your dispute.
Self-employed or on ACA insurance?
With no HR department to help, you carry the full cost of errors. Our audit pays for itself.
Helping a parent with Medicare bills?
49% of Medicare claims contain errors. We review the bill so you can focus on the care.
Ready to check your bill?
Upload your bill now. If we do not find anything, you owe nothing.