OPEN MINDS, The Behavioral Health & Social Service Industry Analyst Industry Statistics In 2004, almost 24%, or 7.6 million, of the nearly 32 million adult stays in U.S. community hospitals involved a behavioral health (mental health or addictive) disorder, as defined by either a primary or secondary diagnosis. Mood disorders, such as bipolar disorder and depressive disorders, topped the list of behavioral health diagnoses in community hospitals, with total hospitalization costs of more than $3.4 billion in 2004. One of every four hospitalizations was . . .