Upload. Review. Send.
You bring the bill. We check every line. You decide what to send.
1. Upload
Add your bill as a PDF or phone photo. Have your insurance statement? Add it too. It's optional.
2. We look for billing errors
We compare your bill against our billing rules, looking for things like duplicate charges and charges dated outside your stay.
3. Free preview
See what's worth asking about and how much money is at stake, before you pay anything.
4. Your letters, $29
Dispute letters about the issues we found, in plain words. They're yours through a private link for 7 days. See all prices
What's worth asking about, and why.
For each possible issue, you see the reason and the dollars at stake, so you know what to ask about.
- Likely errorYour paperwork shows a clear mismatch.
- Worth askingNot proof of an error, but a fair question to raise.
Potential issues we found on this bill
Total possible issues: $1,690
Possible duplicate $1,200
Worth askingThe same room charge shows up two times for the same stay.
Denial worth reviewing $230
Likely errorThe insurance statement marks this $230 charge as denied because information is missing. It's worth asking the insurer what information is needed to review it.
Billed after discharge $85
Worth askingThis item is dated after the discharge date on the bill.
Late-filing denial $175
Likely errorThe insurance statement marks this $175 charge as denied for late filing. It's worth asking the provider whether this charge should be billed to you.
What we check
More than 20 common billing problems, including:
- Charges above what your insurance statement says you owee.g. The bill asks for more than your statement says you owe.
- Duplicate chargese.g. The same room charge twice for one stay.
- Insurer payments that never got creditede.g. Insurance paid, but the bill doesn't show it.
- Out-of-network charges on protected servicese.g. An out-of-network bill for emergency care.
- Codes billed together or in amounts Medicare's rules don't allowe.g. Two codes that shouldn't be billed together.
- Dates that don't line up with your staye.g. A charge dated after you went home.
- Your bill and insurance statement not matchinge.g. Different amounts for the same service.
- Bills that never went to insurancee.g. No sign the claim was ever sent.
- Math that doesn't add upe.g. Line items that don't add up to the total.
- We also tell you when financial assistance may be worth asking about.
Where our rules come from
We use public rules, like Medicare's coding edits, and the numbers on your own paperwork. If something is a question rather than a clear mistake, we say so.
We use CMS's Q4 2026 coding edit files.
- Medicare's coding edits (NCCI)Which codes may be billed together
- Medicare's unit limits (MUE)How many units are normal for one day
- No Surprises ActProtections from surprise out-of-network bills
- Your bill and insurance statementThe numbers on your own paperwork