earn such eligible professional one-half of the highest potential score for the performance category described in paragraph (2)(A)(iii) for such performance period. A MIPS eligible professional may only count the completion of such a program for purposes of such category one time during the eligible professional’s lifetime. . 108. GAO study and report on average sales price (a) Study (1) In general The Comptroller General of the United States (in this section referred to as the Comptroller General ) shall conduct a study on spending for applicable drugs under part B of title XVIII of the Social Security Act. (2) Applicable drugs defined In this section, the term applicable drugs means drugs and biologicals— (A) for which reimbursement under such part B is based on the average sales price of the drug or biological