Hospital-based programs that provide diagnostic and treatment services for individuals who have acute psychiatric disorders, who require hospitalization on a voluntary or involuntary basis for maximum benefit, and who might be a threat to themselves, to their families or to others if left in the community or placed in a less restrictive treatment setting. The objective of inpatient mental health programs is to stabilize and then return the individual to the community for ongoing treatment as quickly as possible, and to facilitate the transition by preparing the individual's family to cope with the limitations imposed by the illness and by arranging for other supportive services as required. Included are psychiatric hospitals, health care hospitals that have psychiatric units and state hospitals for people who are mentally disordered.

Programs that provide walk-in, walk-out diagnostic and treatment services for children, adolescents and/or adults who have acute or chronic psychiatric disorders but do not need 24-hour care; and/or provide counseling services for individuals, couples, families and extended family groups who may be experiencing difficulty resolving personal or interpersonal conflicts or making personal adjustments to stressful life situations such as separation, divorce, widowhood, loss of a child, poor health, unemployment, family violence, delinquency or substance abuse.