Jack Zwanziger, Glenn Melnick, Kathleen M. Eyre; Hospitals and Antitrust: Defining Markets, Setting Standards. J Health Polit Policy Law 1 April 1994; 19 (2): 423–447. doi: https://doi.org/10.1215/03616878-19-2-423
The definition of geographic and product markets is a critical aspect of any antitrust analysis. This paper argues for a different approach to market definition in areas where insurance plans that contract selectively are a significant market presence. Such a proposed approach is described and some policy implications are drawn.