Beginning December 12 at 2:00 PM ET, the Centers for Medicare and Medicaid Services (CMS) will start accepting applications for 380 providers to participate in the A/B Rebilling Demonstration. This three-year project allows IPPS providers (excluding PIP providers) to resubmit inpatient claims that were determined to be in the incorrect setting as a new outpatient claim beginning January 1, 2012.