On March 13, 2013, the Centers for Medicare & Medicaid Services (CMS) announced a policy ruling  that, while on the surface appearing promising, likely fails to address concerns raised by the American Hospital Association (AHA) and other stakeholders related to CMS' position on reimbursement for Part B services when a hospital’s Part A inpatient claim is denied. In addition to the ruling, CMS released a proposed rule to permanently revise its Part B inpatient billing policy to be consistent with the ruling. 
The CMS ruling, CMS-1455-R, follows numerous Medicare Appeals Council and Administrative Law Judge decisions allowing Part B payments in this circumstance. In addition, the ruling comes in the wake of a lawsuit filed by the AHA in November 2012 over CMS' refusal to reimburse hospitals for Part B services when Recovery Auditors (f/k/a as Recovery Auditor Contractors) deny hospitals’ Part A inpatient claims for reasonable and necessary care.
Under the new ruling, when a Part A inpatient claim for a hospital inpatient admission is denied as not reasonable and necessary, the hospital may submit a Part B inpatient claim for reasonable and necessary services that were provided. A hospital may submit a Part B inpatient claim for Part B services that would have been payable to the hospital had the beneficiary originally been treated as an outpatient rather than admitted as an inpatient, except when those services specifically require outpatient status, such as outpatient visits, emergency department visits, and observations services.
To take advantage of this change, however, hospitals must resubmit denied claims to Part B within one year of when the services were provided. Hospitals with claims appeals currently underway are not bound by the one-year limit and may resubmit Part B claims after the appeals are exhausted, regardless of when the services were provided.
While the ruling will provide some relief to hospitals currently appealing numerous contractor denials, the long-term impact of CMS' policy change is unlikely to resolve the concerns raised by the AHA in its lawsuit or reduce the number of appeals pursued by hospitals for claims denied by Recovery Auditors. Recovery Auditors typically review claims that are more than a year old. Even if the claims were reviewed within a year, hospitals will be unable to simultaneously appeal a Recovery Auditor’s decision and seek payment under Part B. Therefore, CMS’ policy change will provide little relief to hospitals struggling with Recovery Auditor denials of Part A claims.