To gauge whether individual market risk pools are healthier in states that have expanded Medicaid and did not allow transitional plans, this data note compares average state risk scores using data from the Centers for Medicare & Medicaid Services Summary Report on Risk Adjustment for the 2015 benefit year. The analysis finds that states that expanded Medicaid and did not allow transitional plans had lower average risk scores, suggesting the risk pools in those state’s markets are healthier than in non-expansion states and in states that allowed transitional plans.