Free tools and guides to help you check any bill for errors.
Medical, utility, phone, insurance. Check the math, look up codes, generate dispute letters, and know your rights. Everything runs in your browser.
What kind of bill are you looking at?
Pick your bill type. We'll show you exactly what to check.
Hospital / ER
ER visits, hospital stays, surgery, ambulance
Doctor / Dentist
Office visits, specialist referrals, dental work
Electric / Gas / Water
Meter reads, rate tiers, estimated bills, fees
Phone / Internet / Cable
Cell plans, broadband, streaming, hidden fees
Insurance
Claim denials, EOB errors, premium overcharges
Funeral
Itemized costs, FTC Funeral Rule, hidden charges
Free tools
Check your bill, look up codes, and generate dispute letters. No uploads. No signup.
Bill Math Checker
Enter line items from any bill and verify the arithmetic against the stated total.
Any bill typeDispute Letter Generator
Pick your bill type, fill in your details, and get a professional dispute letter with regulatory citations.
Any bill typeCall Script Builder
Generate a calm, organized script for dispute calls, refund requests, and escalation conversations.
Any bill typeDispute Deadline Tracker
Turn due dates, denial notices, and collection letters into a practical follow-up timeline.
Any bill typeBefore You Pay Checklist
Run a final review to decide if a bill is ready to pay, needs more checking, or should be disputed.
Any bill typePrintable Billing Worksheet
Keep charges, call notes, evidence, and next steps on one printable page while you work a dispute.
Any bill typeMedical Code Lookup
Look up any medical procedure code to see what it means and what Medicare pays.
MedicalDouble-Charge Checker
Check if two medical procedure codes should be billed together, based on government billing rules.
MedicalMedicare Claims Office Finder
Find which Medicare claims office processes claims in your state.
MedicalPharmacy Price Checker
Check if you are being overcharged for your generic prescriptions.
PharmacyStep-by-step guides
Pick your bill type. Each guide walks you through what to look for, how to check the math, and how to dispute errors.
How to Check a Medical Bill for Errors
Hospital bills, doctor visits, dental, pharmacy. Check medical procedure codes, spot duplicates, compare against what Medicare pays.
How to Read an Itemized Medical Bill
Understand every line on your medical bill: codes, descriptions, charges, adjustments, and what you actually owe.
Complete Guide to Medical Billing Errors
The most common medical billing errors, why they happen, and exactly how to catch each one.
How to Write a Medical Bill Dispute Letter
Templates, regulatory citations, and a step-by-step process for disputing medical charges in writing.
How to Check a Utility Bill for Errors
Electricity, gas, water, sewer. Verify meter readings, check rate tiers, catch estimated-read overcharges.
How to Check a Phone or Internet Bill
Cell phone, broadband, cable, streaming. Spot cramming, verify plan rates, catch post-cancellation charges.
How to Dispute Any Bill
Universal dispute process. Works for insurance, subscriptions, auto repair, contractor bills, and anything else.
Medical Bill Rights by State
Overview of balance billing protections, prompt pay laws, and medical debt rules across all 50 states.
Know your rights
Every state has different rules about what billers can charge you, when they must respond to disputes, and how medical debt is handled. We cover all 50 states plus DC.
- Balance billing and surprise bill protections
- Prompt pay and timely billing requirements
- Right to an itemized bill
- Medical debt and collections protections
Three steps to dispute a billing error
Learn what to look for
Read the guide for your bill type. We show you the most common errors, what each charge means, and exactly where to look.
Check your bill
Use the free tools to verify the math, look up codes, and organize your notes. Everything runs in your browser.
Dispute the error
Generate a dispute letter with the right regulatory citations. Send it certified mail. Follow up in 30 days.
Questions
Start checking your bills.
Pick a tool or guide and get started. Many billing errors are straightforward to spot once you know what to look for.