Impact of New York State's Health Home Model on Health Care Utilization.

The Affordable Care Act established Medicaid health homes to provide care management and coordination for high-need individuals, including many with serious mental illness. The authors used data from the Medicaid Data Warehouse to examine health care utilization over 3 years among 10,193 individuals who enrolled in a New York State health home and had at least one outpatient mental health visit during the year prior to enrollment. Results for postenrollment year 2 indicated a 43% decrease in inpatient mental health discharges, a 38% decrease in substance use discharges, and a 7% reduction in general medical discharges, whereas mental health outpatient treatment and behavioral and nonbehavioral medication utilization increased. Further research is needed to determine the effectiveness of health home care management for individuals with serious mental illness.