How it works
Three simple steps to check your bill
Upload your bill
Drag and drop a PDF medical bill. The file stays in your browser and is never sent anywhere.
AI scans for errors
A specialized medical billing AI runs locally on your device to analyze every line item and charge.
Get your report
Review flagged issues with explanations, severity ratings, and a ready-to-send dispute letter.
Upload your medical bill
Drag and drop a PDF, or click to browse
Medical billing errors are a massive problem
Americans owe over $220 billion in medical debt. A significant portion of that is due to billing mistakes that go unchallenged.
45%
of insured adults received a bill for something they thought insurance should cover
Commonwealth Fund, 202466.5%
of personal bankruptcies cite medical bills or illness-related income loss
American Journal of Public Health, 2019Most people never challenge their bills
According to a TransUnion Healthcare survey, nearly two-thirds of patients have never disputed a medical bill. A Commonwealth Fund study found the main reason: people simply did not know they could.
Yet when people do challenge errors, the success rate is remarkably high. A 2024 study published in JAMA Health Forum found that 74% of patients who reported a billing error had it corrected, and 76% who tried to negotiate received financial help or had their bill reduced.
BillRx helps you find those errors so you can take action.
What BillRx checks for
Arithmetic errors
Line items that don't add up, quantity mismatches, incorrect totals
Duplicate charges
The same service billed more than once on the same date
Vague or inflated fees
Generic charges like "miscellaneous supplies" without itemization
Medical coding issues
CPT code upcoding, unbundling, and medical necessity questions
Patient rights
No Surprises Act protections, timely billing violations
EOB mismatches
Provider bill vs. insurance Explanation of Benefits discrepancies
Learn more about your rights
- •No Surprises Act — Federal protections against unexpected out-of-network bills (CMS.gov)
- •CFPB Medical Debt Resources — Know your rights when dealing with medical debt and collections
- •KFF: The Burden of Medical Debt — Comprehensive analysis of who owes medical debt and how much
- •How to Appeal an Insurance Decision — Step-by-step guide to internal and external appeals (Healthcare.gov)
$0
cost to you — forever free
0 bytes
of data sent to any server
100%
open source — fully auditable
Privacy transparency
Your medical bill data is processed entirely in your browser. No bill content, PDF files, or analysis results are ever uploaded, stored, or transmitted to any server.
This site is hosted on Cloudflare Pages. Like any web host, Cloudflare automatically logs standard HTTP request metadata (IP address, page URL, browser type, country) when you load the page. This is infrastructure-level logging that applies to virtually every website on the internet. None of this metadata includes your bill data — it only shows that you visited the site. We have disabled all optional analytics and tracking. No cookies are set, no analytics scripts are loaded, and no third-party trackers are present.