Free Billing Tools
Useful Medical Billing Tools — Not Just More Articles
Check claims, estimate patient responsibility, calculate Medicare PFS payments, find timely filing deadlines, and inspect 837P files. Each tool is free and works directly in the browser.
Choose a Free Billing Tool
Each page is a complete standalone tool with explanations, examples and printable results.
CMS-1500 Claim Checker
Check common CMS-1500 completeness, NPI, service-line, diagnosis-pointer and charge-total issues before filing.
Open free tool →Patient Responsibility Calculator
Estimate deductible, copay, coinsurance, insurer payment and contractual adjustment with a transparent calculation.
Open free tool →Medicare PFS Calculator
Estimate a Medicare Physician Fee Schedule payment from RVUs, GPCIs and the 2026 conversion factor.
Open free tool →Claim Timely Filing Calculator
Calculate a Medicare one-calendar-year deadline or a custom payer filing period and see days remaining.
Open free tool →837P Validator & Viewer
Open an 837P file locally, inspect claims and service lines, and run basic X12 envelope, total and NPI checks.
Open free tool →Why these tools are useful
Medical billing work often involves more than typing a claim. Staff need to catch obvious claim errors, estimate what a patient may owe, understand Medicare payment math, watch payer deadlines and inspect electronic claim files. These tools bring those common tasks together in one place.
Privacy-first browser tools
The CMS-1500 checker and 837P viewer are designed to perform their work in your browser. No account is required. For protected health information, always follow your organization’s privacy and security procedures and verify payer-specific requirements before filing.
Need software to prepare claims?
MedClaimSoftware offers Windows software for CMS-1500, UB-04, OWCP and electronic 837P claim workflows.
View Medical Billing Software