Skip to main content

How can we prevent cream skimming in a competitive health insurance market?

The great challenge for the 90’s

  • Chapter
Health Economics Worldwide

Abstract

Recently in many countries market oriented strategies have been implemented or proposed in order to improve efficiency in health care. In several countries (e.g. the Netherlands, Australia, Germany, Israel, Switzerland and the United States of America (USA)) an essential aspect of these strategies is that competing insurers receive a risk-adjusted premium-replacing payment per insured. In return the insurers are responsible for paying for or delivering the services as described in the benefits package. The payment per insured is dependent on the risk category to which the insured belongs and provides the insurer with an incentive for efficiency. However, if the risk groups are heterogeneous, cream skimming may arise, resulting in adverse effects to society in terms of reduced (incentives for) quality and efficiency of care.

This paper has been presented at the Second World Congress on Health Economics, September 1990, in Zürich. The authors wish to thank Brad Kirkman-Liff, Andrew Street and Peter Zweifel for their valuable comments on a previous draft.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 129.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 169.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 169.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  • Anderson, G.F., and J. Knickman, “Patterns of expenditure among high utilizers of medical care services: The experience of Medicare beneficiaries from 1974 to 1977”, Medical Care, 22, pp. 113–119, 1984.

    Google Scholar 

  • Anderson, G.F., E.P. Steinberg, J. Holloway, and J.C. Cantor, “Paying for HMO Care: Issues and Options in Setting Capitation Rates”, Milbank Quarterly, 64, pp. 548–565, 1986.

    Article  Google Scholar 

  • Anderson, G.F., E.P. Steinberg, N.R. Powe, S. Antebi, J. Whittle, S. Horn, and R. Herbert, “Setting payment rates for capitated systems: a comparison of various alternatives”, Inquiry, 27, pp. 225–233, 1990.

    Google Scholar 

  • Ash, A., F. Porell, L. Gruenberg et al., “Adjusting medicare capitation payments using prior hospitalization data”, Health Care Financing Review, 10–4, pp. 17–29, 1989.

    Google Scholar 

  • Ashley, J., and G. McLachlan (eds.), “Mortal or morbid? — A diagnosis of the morbidity factor”, Nuffield Provincial Hospitals Trust, London, 1985.

    Google Scholar 

  • Beebe, J.C., “Medicare reimbursement and regression to the mean”, Health Care Financing Review, 9–3, pp. 9–22, 1988.

    Google Scholar 

  • Beebe, J.C., J. Lubitz, and P. Eggers, “Using prior utilization to determine payments of Medicare enrollees in health maintenance organizations”, Health Care Financing Review, 6–3, pp. 27–38, 1985.

    Google Scholar 

  • Bolhuis, E.A., “Normuitkeringen, de scharnier tussen doelmatigheid en solidariteit”, in: Ziekte-kosten post Dekker, Astin Symposium, pp. 31–61, November 8. 1989.

    Google Scholar 

  • Bradshaw, J., “A taxonomy of social need”, in: G. McLachlan, Problems and progress in medical care, Oxford University Press, London, pp. 71–82, 1972.

    Google Scholar 

  • Enthoven, A.C., “Consumer-Choice Health Plan”, New England Journal of Medicine, 198, pp. 650–658 and 709–720, 1978.

    Article  Google Scholar 

  • Enthoven, A.C., “Managed competition in health care and the unfinished agenda”, Health Care Financing Review, Annual Supplement, pp. 105–120, 1986.

    Google Scholar 

  • Enthoven, A.C., Theory and practice of managed competition in health care finance, North Holland, Amsterdam, 1988.

    Google Scholar 

  • Enthoven, A.C. and R. Kronick, “A consumer-choice health plan for the 1990’s”, New England Journal of Medicine, 320, pp. 29–37 and 94–101, 1989.

    Article  Google Scholar 

  • Epstein, A.M., and E.J. Cumella, “Capitation payment: using predictors of medical utilization to adjust rates”, Health Care Financing Review, 10–1, pp. 51–69, 1988.

    Google Scholar 

  • Freeborn, D.K., C.C. Pope, J.P. Mullooly, and B. McFarland, “Consistently high users of medical care among the elderly”, Medical Care, 28, pp. 527–540, 1990.

    Article  Google Scholar 

  • Gerritse, R., R.T.J.D. Janssen, and J.D. Poelert, “Toward a budgetsystem for the Central Fund (Naar een verdeelstelsel voor de Centrale Kas)”, report commissioned by the Dutch government, 1989.

    Google Scholar 

  • Gitter, W., H. Hauser, K.D. Henke, E. Knappe, L. Menner, G. Neubauer, P. Oberender, G. Sieben, “Structural Reform of the Statutory Health Insurance System”, Scientific Study Group “Health Insurance”, Universität Bayreuth, June 1989.

    Google Scholar 

  • Gruenberg, L., S.S. Wallack, and C.P. Tompkins, “Pricing strategies for capitated delivery systems”, Health Care Financing Review, 1986 Annual Supplement, pp. 35–44, 1986.

    Google Scholar 

  • Gruenberg, L., C. Tompkins and F. Porell, “The health status and utilization patterns of the elderly: implications for setting Medicare payments to HMO’s”, in: Scheffler, R.M., and L.F. Rossiter (eds.), Advances in health economics and health services research, Vol. 10, JAI Press, Greenwich, pp. 41–73, 1989.

    Google Scholar 

  • Hammenga, interview, VVP Magazine, p. 35, August 9, 1989.

    Google Scholar 

  • Howland, J., J. Stokes III, S.C. Crane, and A.J. Belanger, “Adjusting capitation using chronic disease risk factors: A preliminary study”, Health Care Financing Review, 9–2, pp. 15–23, 1987.

    Google Scholar 

  • Launois, R., B. Majnoni d’Intignano, J. Stephan, and V. Rodwin, “Les Réseaux de Soins Coordonnés (RSC): Propositions pour une Réforme Profonde du Système de Santé”, Revue Française des Affaires Sociales, 39 (1), pp. 37–62, janvier-mars 1985.

    Google Scholar 

  • Lubitz, J., J. Beebe, and G. Riley, “Improving the Medicare HMO payment formula to deal with biased selection”, in: Scheffler, R.M., and L.F. Rossiter, (eds.), Advances in Health Economics and Health Services Research, Vol. 6, JAI Press, Greenwich, pp. 101–122, 1985.

    Google Scholar 

  • Lubitz, J., “Health status adjustments for Medicare capitation”. Inquiry, 24, pp. 362–375, 1987.

    Google Scholar 

  • Luft, H.S., “Health Maintenance Organization and the rationing of medical care”, Milbank Memorial Fund Quarterly/Health and Society, 60, pp. 268–306, 1982.

    Article  Google Scholar 

  • Luft, H.S., “Compensating for biased selection in health insurance”, Milbank Quarterly, 64, pp. 566–591, 1986.

    Article  Google Scholar 

  • Manton, K.G., H.D. Tolley, and J.C. Vertrees, “Controlling risk in capitation payment”. Medical Care, 27, pp. 259–272, 1989.

    Article  Google Scholar 

  • McClure, W., “On the research status of risk-adjusted capitation rates”, Inquiry 21, pp. 205–213, 1984.

    Google Scholar 

  • McCall, N. and H.S. Wai, “An analysis of the use of Medicare services by the continuously enrolled aged”, Medical Care 21, pp. 567–585, 1983.

    Article  Google Scholar 

  • Newhouse, J.P., “Is competition the answer?”, Journal of Health Economics, 1, pp. 109–115, 1982.

    Article  Google Scholar 

  • Newhouse, J.P., “Rate adjusters for Medicare capitation”, Health Care Financing Review, Annual Supplement, pp. 45–55, 1986.

    Google Scholar 

  • Newhouse, J.P., W.G. Manning, E.B. Keeler, and E.M. Sloss, “Adjusting capitation rates using objective health measures and prior utilization”, Health Care Financing Review, 10–3, pp. 41–54, 1989.

    Google Scholar 

  • Pauly, M.V., “Is cream skimming a problem for the competitive medical market?”, Journal of Health Economics, 3, pp. 87–95, 1984.

    Article  Google Scholar 

  • Pauly, M.V., “Efficiency, equity and costs in the U.S. health care system”, in: Havighurst C.C., et al. (eds.): American Health Care: What are the lessons for Britain?, London, IEA Health Unit, pp. 23–45, 1988.

    Google Scholar 

  • Porell, F.W. and W.M. Turner, “Biased selection under the senior health plan prior use capitation formula”, Inquiry, 27, pp. 39–50, 1990.

    Google Scholar 

  • Posthuma, B.H., interview, VVP Magazine, p. 19, November 22, 1989.

    Google Scholar 

  • Scotton, R.B., “Integrating Medicare with private health insurance: the best of both worlds?”, in: Smith, C.S. (ed.), Economics and Health: 1989; Proceedings of the eleventh Australian Conference of Health Economists, Monash University, Clayton, Victoria, 3168, Australia, pp. 219–238, 1989.

    Google Scholar 

  • Thomas, J.W., R. Lichtenstein, L. Wyszewianski, and S. Berki, “Increasing Medicare enrollment in HMO’s: The need for capitation rates adjusted for health status”, Inquiry 20, pp. 227–239, 1983.

    Google Scholar 

  • Thomas, J., and R. Lichtenstein, “Including health status in Medicare’s adjusted average per capita cost capitation formula”, Medical Care 24, pp. 259–275, 1986.

    Article  Google Scholar 

  • Van de Ven, W.P.M.M., “From regulated cartel to regulated competition in the Dutch health care system”, European Economic Review, 34, pp. 632–645, 1990.

    Article  Google Scholar 

  • Van de Ven, W.P.M.M., “Perestrojka in the Dutch health care system; a demonstration project for other European countries”, European Economic Review, 35, pp. 430–440, 1991.

    Article  Google Scholar 

  • Van Duuren, R., B.H. Posthuma, and F.A.M. Ruygt, “Marktwerking, normuitkeringen en risicoselectie”, Economisch Statistische Berichten, 74, pp. 1232–1235, 1989.

    Google Scholar 

  • Van Vliet, R.C.J.A., and W.P.M.M. van de Ven, “Towards a budget formula for competing health insurers”. Paper presented at the second World Congress on Health Economics, Zürich, September 1990 (to be published in Social Science and Medicine.)

    Google Scholar 

  • Welch, W.P., “Regression towards the mean in medical care costs: Implications for biased selection in HMOs”, Medical Care, 23, pp. 1234–1241, 1985.

    Article  Google Scholar 

  • Whitmore, B.W., J.E. Paul, D.A. Gibbs, and J.C. Beebe, “Using health indicators in calculating the AAPCC”, in: Scheffler, R.M., and L.F. Rossiter (eds.), Advances in Health Economics and Health Services Research, Vol. 10, JAI Press, Greenwich, pp. 75–109, 1989.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1992 Springer Science+Business Media Dordrecht

About this chapter

Cite this chapter

van de Ven, W.P.M.M., van Vliet, R.C.J.A. (1992). How can we prevent cream skimming in a competitive health insurance market?. In: Zweifel, P., Frech, H.E. (eds) Health Economics Worldwide. Developments in Health Economics and Public Policy, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2392-1_2

Download citation

  • DOI: https://doi.org/10.1007/978-94-011-2392-1_2

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-5055-5

  • Online ISBN: 978-94-011-2392-1

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics