Free medical bill error check

Find out exactly how much your hospital or clinic overcharged you.

Upload your bill. We check every line for errors in seconds. See your total potential savings — free, instantly, no signup required.

No account. No credit card. Results in under 10 minutes.

Completely free to check
80% of bills have errors
$1,300 avg error on large bills
Sample report
Riverside General Hospital
4 errors found
Total estimated savings
$2,180
across 4 billing errors identified
Duplicate charge
Major · 9/15
Hemoglobin A1c (CPT 83036) billed twice — "drawn once" in note
Identical CPT code on lines 3 and 4, same date of service. Note documents a single draw.
Unbundling
Major · 9/15
Panel CPT billed alongside component tests already included
CPT 80050 (general health panel) billed with 80053 (CMP) separately. Under NCCI edits, 80053 is already included in 80050.
Services not rendered
Critical · 15/15
High-value procedure billed with no supporting documentation
Wrong ICD-10 linkage
Major · 10/15
Preventive visit linked to symptom code — deductible may apply incorrectly
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2 more errors locked
Upload your bill to see your full report
Check my bill free →
Free to check · No credit card · $47 to unlock full report + dispute letter
80%
of hospital bills contain at least one error
$1,300
average overcharge on bills above $10,000
0.1%
of denied claims are ever appealed
$47
to unlock your full report and dispute letter
How it works

Four steps.
Under 10 minutes.

No billing knowledge required. Just upload your bill and we'll tell you what's wrong with it.

1
📄

Upload your bill

Photo, scan, or PDF — any format works. No account needed, no credit card, no signup.

60 seconds · free
2
🔍

We scan every line

Our system checks every charge against 8 error types — from duplicate bills to wrong coverage codes.

3–8 minutes · automated
3
💰

See your savings

Your total estimated savings appears immediately — completely free. No strings, no obligation.

Instant · always free
4
✉️

Unlock & dispute

Pay $47 to download your full itemized report and a ready-to-send dispute letter. Sign it. Send it.

One-time · $47
Why your letter gets results

We check your bill against
10 specific federal laws.

Every error we identify is matched to the exact regulation it violates. Your dispute letter cites each one by statute name and section number — the same references hospital compliance departments are legally required to respond to.

Law 01
No Surprises Act
42 U.S.C. § 300gg-111 · Effective Jan 2022
Bans out-of-network balance billing for emergency care and most non-emergency services at in-network facilities. Violations expose hospitals to $100/day per patient in CMS penalties.
Balance billingOut-of-network ERSurprise bills
Law 02
CMS Medicare Fee Schedule
42 CFR Parts 412–415 · Updated annually
The national standard rate for every procedure code. We compare your charges against the published 2026 rate and your hospital's own price transparency data — outlier charges cited with both figures.
Overpriced proceduresFacility feesPOS code errors
Law 03
NCCI Bundling Rules
National Correct Coding Initiative · CMS quarterly
CMS publishes 3.3 million code pairs that cannot be billed separately. Splitting these to inflate your bill is an NCCI violation. We cite the specific edit pair and effective quarter in your letter.
Unbundled proceduresCode pair violationsDuplicate codes
Law 04
ICD-10-CM Guidelines
CMS + AHA · Updated October 1 annually
Wrong diagnosis codes change what your insurance covers. A preventive visit miscoded as diagnostic means your full deductible applies for a visit that should be free. We catch every coverage-affecting miscoding.
Wrong diagnosis codesPreventive vs diagnosticCoverage errors
Law 05
Fair Debt Collection Practices Act
15 U.S.C. § 1692 · FDCPA
Once you send a written dispute, collection activity must legally pause until the debt is verified. Your letter invokes this right explicitly — the hospital cannot send your account to collections while your dispute is under review.
Collection pauseDebt validationCredit protection
Law 06
State Balance Billing Laws
Varies by state · checked against your location
Many states exceed federal protections. California, New York, Texas, and Illinois have stricter billing limits and faster dispute timelines. We route your dispute to the strongest available law — federal or state.
State-specific rightsCharity careStronger limits
Law 07
False Claims Act
31 U.S.C. §§ 3729–3733
Prohibits submitting false or fraudulent claims for payment to government health programs including Medicare and Medicaid. Hospitals face treble damages and penalties of up to $27,894 per false claim. Your letter cites this where billing for services not rendered.
Services not renderedMedicare fraudPhantom charges
Law 08
ACA Section 2713
Preventive Care Mandate · 42 U.S.C. § 300gg-13
Requires insurance plans to cover recommended preventive services at zero cost to the patient. When a preventive visit is miscoded as diagnostic, your insurer charges you a deductible for a service that should be free. We identify and dispute every preventive care miscoding.
Preventive care billingZero-cost servicesACA mandate
Law 09
Medicare Assignment Rules
Social Security Act § 1842
Participating Medicare providers must accept Medicare's approved amount as full payment and cannot balance-bill Medicare patients beyond their standard cost-sharing. We check every Medicare bill for assignment violations and excess charges.
Medicare overchargesAssignment violationsExcess billing
Law 10
Hospital Price Transparency Rule
CMS 2021 · 45 CFR § 180
All hospitals must publicly post their negotiated prices for 300+ standard services. When your billed amount significantly exceeds your hospital's own published rate, we cite the discrepancy with the published figure — a powerful dispute tool.
Price transparencyPublished rate gapsChargemaster abuse

A generic complaint letter gets filed. A letter citing 42 U.S.C. § 300gg-111 or 31 U.S.C. §§ 3729–3733 gets escalated to the compliance department — where it gets resolved.

Check my bill free →
Pricing

Simple. Transparent. Worth it.

One-time unlock fee

See your savings first.
Pay only if it's worth it.

The check is always free. You see the total before you spend a cent. If we don't find significant errors, you owe nothing.

just $47
one-time · instant download · no subscription
Full itemized error report — every mistake explained in plain English with the dollar amount in dispute
Professional dispute letter addressed to your hospital's billing department — ready to sign and send today
Step-by-step instructions for submitting your dispute and following up if they don't respond
Legal citations included — the exact regulations your hospital violated and your rights under federal law
The error scan is always free. You see every violation and estimated savings before deciding whether to unlock.
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Our fair pricing promise If we find less than $150 in potential savings, your unlock fee automatically drops to $27 — so the report always makes financial sense.
Questions

You probably have a few.

We show you the total estimated savings for free so you can decide whether the report is worth it before spending anything. If we find $2,000 in errors, paying $47 to get the itemized breakdown and a professional dispute letter is an obvious decision. If we find nothing significant, you owe nothing and walk away informed.
Yes — $47 is a flat fee regardless of the size of errors found, so the value ratio gets better the more we find. The one exception: if we identify less than $150 in potential savings, the unlock fee drops to $27. We think that's fair — the report should always feel like an obvious decision relative to what it could save you.
Your report includes step-by-step escalation guidance: filing a complaint with your state Department of Insurance, contacting the Consumer Financial Protection Bureau, and in some states, your state Attorney General. Most billing departments take disputes seriously when the letter includes specific error citations and legal references — which ours does.
Yes. If you paid a bill that contained billing errors, you are entitled to a refund of any overcharges. The dispute process is the same — your letter requests a corrected bill and a refund of the identified overcharges. We can check bills you've already paid and draft a refund request letter.
Absolutely. Federal law gives you the explicit right to request an itemized bill and dispute any charge you believe is incorrect. The No Surprises Act, the Fair Debt Collection Practices Act, and CMS billing guidelines all protect patients who dispute errors. BillSherpa is a patient advocacy service — we help you exercise rights you already have.
Eight error types: duplicate charges, upcoding, unbundling, services not rendered, wrong ICD-10 diagnosis codes, wrong CPT procedure codes or modifiers, preventive vs diagnostic miscoding, and outlier pricing above Medicare rates. The most financially significant are often the coverage code errors — a single wrong diagnosis code can cause an entire claim to be denied or misapplied.

Find out how much your hospital or clinic overcharged you. It's free.

Upload your bill. See your estimated savings. Then decide whether $47 is worth it.

Free to check Results in under 10 minutes $47 flat to unlock — no subscription HIPAA-compliant