AHRQ Stats: Hospitalization for Mental and Substance Use Disorders

Nearly 10 million hospital stays in 2016 involved a mental and substance use disorder (MSUD). Six percent of all U.S. hospitalizations involved a principal diagnosis of MSUD (2.2 million stays) while 22 percent had a secondary diagnosis (7.7 million stays). (Source: AHRQ, Healthcare Cost and Utilization Project Statistical Brief #249: Inpatient Stays Involving Mental and Substance Use Disorders, 2016.)