CMS continues to release subregulatory guidance on the inpatient hospital admission/medical review criteria that were adopted in the final FY 2014 Medicare inpatient prospective payment system/long-term care hospital final rule. In short, under this new policy, if the ordering practitioner expects a beneficiary’s surgical procedure, diagnostic test, or other treatment to require a stay in the hospital lasting at least two midnights, and admits the beneficiary as an inpatient based on that expectation, it is generally appropriate that the hospital receive Medicare Part A payment. The order must also be documented in the medical record in accordance with the regulations, and a physician must certify the medical necessity of hospital inpatient services. CMS recently posted updated subregulatory instructions related to prepayment and post-payment review schedules and parameters, along with answers to frequently-asked implementation questions.