The development of efficient and flexible agent-based medical diagnosis systems represents a recent research direction. Medical multiagent systems may improve the efficiency of traditionally developed medical computational systems, like the medical expert systems. In our previous researches, a novel cooperative medical diagnosis multiagent system called CMDS (Contract Net Based Medical Diagnosis System) was proposed. CMDS system can flexibly solve a large variety of medical diagnosis problems. In this paper we analyze the increased intelligence of the CMDS system, which motivates its use for different medical problems solving.