Sadly the only thing that would work is that each false claim results in a suspension on automatic flagging. 1 claim, one day, second claim, 2 days, 3rd claim 3 days and so on. That would quickly result in them not filing false claims, as the penalty would be prohibitive, so they will improve the detection to reduce the false positives. They can still file claims manually, but that will require somebody to put a signature, with the resultant having to pay the counterclaim cost, per request. If there is no penalty for lying, then there is no reason not to do so, it is a way to make money.