Free Billing Tool
Medical Claim Timely Filing Calculator
Enter a date of service or Through date and calculate the filing deadline. Use the Medicare one-calendar-year rule or a common/custom payer day limit.
Calculate a claim filing deadline
For Medicare span-date claims, use the Through date. For other payers, confirm which date starts the filing period.
Filing deadline
Medicare timely filing
CMS training material describes a 1 calendar year timely filing period. The start date is the date of service or the From date for claims without a span; when a claim includes From and Through dates, CMS states that the Through date is used to determine filing timeliness.
CMS Medicare Billing: CMS-1500 & 837P glossary
Commercial payer deadlines
Commercial, Medicaid, workers’ compensation and other payer deadlines vary by contract, state, claim type and whether the claim is original or corrected. The custom-day option is intended to do the date arithmetic after you identify the correct rule.
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