Find billing errors in your medical bill — in minutes
Upload any bill or insurance denial. Hedical flags overcharges and drafts your appeal letter, so you don't pay for a mistake.
Statement
Mercy General Hospital
Date: 06/15/2026
Acct: #4829-71
Same code billed twice on line 4 — flagged for appeal
How it works
Upload
Any bill or EOB
Analyze
Errors get flagged
Act
Letter, ready to send.
Medical billing is error-prone at scale
We analyzed over 200,000 claim records and published claims data from CMS, AHIP, and KFF. These are the systemic problems Hedical is built to solve.
| Problem | Scale | Source |
|---|---|---|
| Of all medical bills contain at least one billing error | 49% | KFF |
| Of in-network claims denied by insurers | 17% | AHIP |
| Of denied claims are never appealed by patients | <0.2% | Commonwealth Fund |
| Of appeals that result in insurer overturning their denial | 44–78% | AMA |
Three tools, one job
Each one reads a different document and tells you what's wrong with it.
Reads bills, denials
Bill and Denial Navigator
Finds billing errors, flags bad codes, and drafts your appeal letter.
Reads visit notes
Documentation Tool
Turns messy clinical notes into clean, structured summaries.
Reads medication lists
Polypharmacy Manager
Catches risky drug combos across medications and supplements.
How to appeal a denied medical claim
You have the legal right to appeal any insurance denial under the Employee Retirement Income Security Act (ERISA) and the Affordable Care Act. Most patients never exercise this right. Here is how.
- 1
Read your Explanation of Benefits
The EOB tells you the official reason for the denial: not medically necessary, out-of-network, experimental, or a billing code mismatch. Appeal strategy depends entirely on which reason is cited.
- 2
Gather supporting medical records
Ask your provider for the clinical notes, test results, and any prior authorization documents that support the medical necessity of the denied service.
- 3
Write a formal appeal letter
Address it to the insurer's appeals department, reference the claim number, cite the specific plan provision that supports coverage, and enclose the supporting records. Hedical can draft this letter for you from your uploaded documents.
- 4
Submit within the deadline
Most plans allow 180 days from the denial date for a first-level appeal. Check your plan document — deadlines vary by state and insurer.
- 5
Escalate if denied again
If the internal appeal is rejected, you can request an external review by an independent third party. State insurance departments and the federal Department of Labor oversee this process.
Source: Centers for Medicare & Medicaid Services (CMS) appeals guidelines and U.S. Department of Labor ERISA claim procedure regulations. CMS appeals overview.
Understand your denial codes
Plain-language guides to the most common insurance denial codes and your appeal rights.
Be among the first to try it
We're onboarding early users in small batches so every letter gets reviewed properly before it ships.