Many of the most common inpatient surgeries in the United States are performed electively. These surgeries are expected to significantly increase with the enactment of the Affordable Care Act. In a new perspectives article, published in the Dec. 27 edition of The New England Journal of Medicine, a team of Weill Cornell Medical College researchers are recommending the nation's health care leaders and medical community join forces to establish evidence-based appropriateness criteria to determine which patients are most in need of elective procedures, such as joint replacement surgery, to slow the projected surge in demand and rising costs.