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SAS Name

0/1 flag; =1 if beneficiary was assigned in fourth quarter (from quarterly assignment table in IDR)  based on the ACO's certified participant list used in fourth quarter assignment. Note that for Prospective Assignment ACOs the prospectively assigned beneficiaries are the same for all periods with the exception of beneficiaries that have met exclusion criteria for one or more reasons during the performance year. As a result, the number of assigned beneficiaries for Prospective Assignment ACOs will be smaller for each consecutive assignment period. 


Populated in Q4 file or later if beneficiary is assigned in a later period.