On March 1, 2018 CMS notified MACs of a Common Working File (CWF) issue causing certain allowable services with dates of service January 1, 2018 through February 27, 2018 to deny incorrectly indicating the service is part of Skilled Nursing Facility (SNF) Consolidated Billing (CB). In some cases overpayment demand letters were issued for claims that were previously paid. The CWF issue was corrected on February 27, 2018.
CMS says no provider action is necessary at this time. Affected claims will be reprocessed and recoupment of any money demanded for previously paid claims due to this issue will be halted and/or returned to providers.