https://qpp.cms.gov/
Essentially, it is Medicare and Mediacid reimbursement based on outcomes. If your outcomes are good, you get a positive % adjustment on reimbursement (bang for the bang). If your outcomes are poor, you get a negative % adjustment on reimbursement (ie, the provider is wasting dollars without an improvement theoretically). Its meant to create an incentive to providers to spend less and improve outcomes/quality... who knows if it will do that though.