Medicaid spending: A brief history.

Medicaid spending has varied greatly over time. This article uses financial and statistical data to trace the history of Medicaid spending in relation to some of the major factors that have influenced its growth over the years. Periods of varying growth are divided into eight "eras," ranging from program startup in 1966 through the post-welfare reform period. Average expenditure and enrollee growth for each era are presented and briefly discussed. Finally, some factors are mentioned that are likely to affect future growth in the Medicaid program.