Capping risk adjustment?
When premiums are community-rated, risk adjustment (RA) serves to mitigate competitive insurers' incentive to select favorable risks. However, unless fully prospective, it also undermines their incentives for efficiency. By capping its volume, one may try to counteract this tendency, exposing insurers to some financial risk. This in term runs counter the quest to refine the RA formula, which would increase RA volume. Specifically, the adjuster, "Hospitalization or living in a nursing home during the previous year" will be added in Switzerland starting 2012. This paper investigates how to minimize the opportunity cost of capping RA in terms of increased incentives for risk selection.
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- van Barneveld, Erik M. & Lamers, Leida M. & van Vliet, Rene C. J. A. & van de Ven, Wynand P. M. M., 2001. "Risk sharing as a supplement to imperfect capitation: a tradeoff between selection and efficiency," Journal of Health Economics, Elsevier, vol. 20(2), pages 147-168, March.
- Zweifel, Peter, 2007. "The Theory of Social Health Insurance," Foundations and Trends(R) in Microeconomics, now publishers, vol. 3(3), pages 183-273, May.
- Shen, Yujing & Ellis, Randall P., 2002.
"Cost-minimizing risk adjustment,"
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Elsevier, vol. 21(3), pages 515-530, May.
- Zweifel, Peter & Breuer, Michael, 2006. "The case for risk-based premiums in public health insurance," Health Economics, Policy and Law, Cambridge University Press, vol. 1(02), pages 171-188, April.
- Peter Zweifel & Harry Telser & Stephan Vaterlaus, 2006. "Consumer Resistance Against Regulation: The Case of Health Care," Journal of Regulatory Economics, Springer, vol. 29(3), pages 319-332, 05.
- van de Ven, Wynand P. M. M. & Beck, Konstantin & Buchner, Florian & Chernichovsky, Dov & Gardiol, Lucien & Holly, Alberto & Lamers, Leida M. & Schokkaert, Erik & Shmueli, Amir & Spycher, Stephan & Van, 2003. "Risk adjustment and risk selection on the sickness fund insurance market in five European countries," Health Policy, Elsevier, vol. 65(1), pages 75-98, July.
- Steinmann Lukas & Telser Harry & Zweifel Peter S., 2007. "Aging and Future Healthcare Expenditure: A Consistent Approach," Forum for Health Economics & Policy, De Gruyter, vol. 10(2), pages 1-28, March.
- Van de ven, Wynand P.M.M. & Ellis, Randall P., 2000. "Risk adjustment in competitive health plan markets," Handbook of Health Economics, in: A. J. Culyer & J. P. Newhouse (ed.), Handbook of Health Economics, edition 1, volume 1, chapter 14, pages 755-845 Elsevier.
- Lehmann, Hansjorg & Zweifel, Peter, 2004. "Innovation and risk selection in deregulated social health insurance," Journal of Health Economics, Elsevier, vol. 23(5), pages 997-1012, September.
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