@techreport{publications43614,
          volume = {21-1223},
           month = {May},
          author = {Helmuth Cremer and Jean-Marie Lozachmeur},
          series = {TSE Working Paper},
       booktitle = {TSE Working Paper},
            type = {Working Paper},
         address = {Toulouse, France},
           title = {Coinsurance vs. copayments : reimbursement rules for a monopolistic medical product with competitive health insurers},
       publisher = {TSE Working Paper},
            year = {2021},
     institution = {Universit{\'e} Toulouse 1 Capitole},
        keywords = {Ex post moral hazard, health insurance competition, copayments, imper-, fect competition},
             url = {https://publications.ut-capitole.fr/id/eprint/43614/},
        abstract = {This paper studies a market for a medical product in which there is perfect competition among health insurers, while the good is sold by a monopolist. Individuals di?er in their severity of illness and there is ex post moral hazard. We consider two regimes : one in which insurers use coinsurance rates (ad valorem reimbursements) and one in which insurers use copayments (specic reimbursements). We show that the induced equilibrium with copayments involves a lower producer price and a higher level of wel- fare for consumers. This results provides strong support for a reference price based reimbursement policy.}
}