OBJECTIVES: The aim of the present study is to evaluate the prevalence of several mental health diagnoses and utilization of anti-psychotic medications among the children (<18 years) enrolled in the Mississippi Medicaid. METHODS: A retrospective analysis was conducted using Mississippi Medicaid administrative claims data for the period July 2013 to June 2014. Beneficiaries were included if enrolled in Medicaid (fee-for-service or coordinated care), were less than 18 years of age at end of observation year and enrolled 3+ months during the observation year. Since most mental health diagnoses are of a chronic nature, diagnosis were assessed using claims for the period January 2012 to June 2014 in order to be as complete as possible. Treatments and costs estimates were based on the one year observation period. Access to care was measured as the proportion of care received from MDs in-county, in adjacent counties, and in other counties. All measures were computed for each county. RESULTS: