
The New Medicare ABN Form (CMS-R-131): A Chiropractic Practice Audit Guide
CMS released an updated Advance Beneficiary Notice of Noncoverage (Form CMS-R-131) on March 13, 2026, mandatory for fee-for-service providers since May 12, 2026. With chiropractic improper payments at 30.4% and nearly 90% of those errors from insufficient documentation, this guide covers ABN trigger points, the GA/GZ/GY modifiers, and the bookkeeping that turns signed notices into collected cash.










