Medicaid enrollment is based on data for FY2006. Population data estimates for July 1, 2006.
The enrollment estimates differ slightly from similar estimates posted by CMS because adjustments to the data have been made for several states where some individuals appeared to be categorized incorrectly. Our most common adjustment was to shift people age 65 and older to the aged category who were previously categorized as disabled, and our second most common adjustment was to shift individuals under age 65 out of the aged category and into the disabled category.

Calculations based on the Urban Institute and Kaiser Commission on Medicaid and the Uninsured estimates based on data from Medicaid Statistical Information System (MSIS) reports from the Centers for Medicare and Medicaid Services (CMS), 2009; and 2004 population estimate for Maine, 2005 population estimate for Nevada, an 2006 population estimates for other states from the United States Census Bureau, available at http://www.census.gov/popest/states/tables/NST-EST2007-01.xls.

1. We estimate that 4.7 million enrollees never received full benefits in any month (qualified only for restricted benefits for all months of enrollment). Approximately 10.0 million beneficiaries had benefits that were restricted at any time during the year. These included eligibles in family planning waiver programs, those receiving restricted benefits because of their eligibility status as aliens, dual Medicare-Medicaid eligibles, and enrollees eligible for prescription drug-only coverage.
2. Maine data are for FY2004.
3. Nevada data are for FY2005.