Timely Claim Filing Rules: Impact on Re-Billing Inpatient Ancillary Services

One of the more difficult issues facing hospitals today is related to the timely claim filing rules associated with re-billing ancillary charges for denied inpatient stays.

Under the RAC demonstration project, CMS allowed hospitals to re-bill their RAC denied inpatient short stay hospitalization cases as outpatient claims. The UB-04 claim type used to submit these claims for benefits was the traditional 13x; and Medicare Part B hospital benefit policies dictated coverage of services and payments.