Medicaid support of alcohol, drug abuse, and mental health services.

Medicaid expenditures for alcohol, drug abuse, and mental health (ADM) services in 1984 were examined for the States of California and Michigan. Persons receiving such services constituted 9 to 10 percent of the total Medicaid population in the two States and accounted for 22 to 23 percent of total Medicaid expenditures. ADM expenditures were 11 to 12 percent of the total. Although the two States had similar proportions of overall expenditures for these services, Michigan appeared to emphasize inpatient psychiatric care, while California emphasized ambulatory and nursing home care. Based on the experience of the two States, national Medicaid expenditures for ADM services exclusive of long-term care were estimated to be $3.5 to $4.9 billion in 1984, two to three times the level suggested by earlier estimates.