Government as reinsurer for very-high-cost persons in nongroup health insurance markets.

Fear of adverse selection drives carriers in nongroup insurance markets to compete in their use of selection mechanisms to screen out high-risk applicants. This contributes to economic inefficiency. Government could assume the role of reinsurer, by assuming responsibility for most of the costs of people who are in the highest 2-3 percent of the national spending distribution. This would spread the burden of costs of very-high-cost persons to the broad population base and could cause premiums to fall as carriers spend less on efforts to avoid adverse selection.