The Role of Overbilling in Hospitals’ Earnings Management Decisions

Abstract

This paper examines the role of overbilling in hospitals’ earnings management choices. Overbilling by hospitals is a form of revenue manipulation that involves misclassifying a patient into a diagnosis-related group that yields higher reimbursement. As overbilling allows hospitals to increase revenues without altering operations, affecting costs, or having to reverse such behavior in the future, I propose and find that overbilling reduces hospitals’ use of managing accruals or cutting discretionary expenditures. Next, I find that hospital managers prefer overbilling to managing accruals (cutting discretionary expenditures) when cutting discretionary expenditures (managing accruals) is constrained, and vice versa. Collectively, my findings suggest that overbilling is an important alternative manipulation tool in hospitals.

Keywords: Overbilling, accrual-based earnings management, real activities manipulation, for-profit hospitals

JEL Classification: I11, I18, M41, M48