Neonatal Abstinence Syndrome: Trend and Expenditure in Louisiana Medicaid, 2003-2013.

Objectives Determine trends in incidence and expenditure for perinatal drug exposure and neonatal abstinence syndrome (NAS) among Louisiana's Medicaid population. We also describe the maternal characteristics of NAS affected infants. Methods Retrospective cohort analysis using linked Medicaid and vital records data from 2003 to 2013.