The proposal, released on Monday as part of a notice of possible Medicare payment changes for 2021, involves the higher rates that Medicare Advantage plans get from the government if they can show their enrollees have a chronic or serious illnesses. Starting in 2021, patient data from provider visits would account for 75 percent of the "risk score" assigned to the plans, compared with the current 50 percent. That would presumably cut at least some of their payments. 

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