Inpatient-outpatient cost shifting in Washington hospitals

This paper empirically investigates the phenomenon known as "cost shifting" across inpatient and outpatient hospital services. That is, we examine whether, when faced with lower government reimbursement for outpatient services, providers raise inpatient prices for non-government patients (and analogously for lower inpatient government reimbursement). Using a panel of hospitals from Washington State, we find that private, nonprofit hospitals do cost shift across types of services. We also find that a firm's cost shifting behavior differs based on the type government insurance program (i.e., Medicare versus Medicaid). Government owned hospitals do not cost shift with respect to any type of government insurance plan.