Half of the [United States] insured population uses virtually no health care at all. The 80th percentile uses only $3,000 [the 95th percentile has] only $11,487 in costs. Itâ€™s the 99th percentile, the people with over $35,000 of medical costs, who represent fully 22% of the entire nationâ€™s medical costs … An individual adult insurance plan is roughly $7,000 … It should be fairly clear that the people who do not file insurance claims do not face rescission. The insurance companies will happily deposit their checks. Indeed, even for someone in the 95th percentile, it doesnâ€™t make a lot of sense for the insurance company to take the nuclear option of blowing up the policy. $11,487 in claims is less than two yearsâ€™ premium … If the top 5% is the absolute largest population for whom rescission would make sense, the probability of having your policy cancelled given that you have filed a claim is fully 10% … If, as I suspect, rescission is targeted toward the truly bankrupting cases â€“ the top 1%, the folks with over $35,000 of annual claims who could never be profitable for the carrier â€“ then the probability of having your policy torn up given a massively expensive condition is pushing 50%. One in two. You have three times better odds playing Russian Roulette.