; (II) has a high risk of hospitalization or other adverse health outcomes; or (III) requires intensive care coordination. . (b) GAO Study and Report (1) Study The Comptroller General of the United States (in this subsection referred to as the Comptroller General ) shall conduct a study on supplemental benefits provided to enrollees in Medicare Advantage plans under part C of title XVIII of the Social Security Act, including specialized MA plans for special needs individuals described in section 1859(b)(6) of such Act ( 42 U.S.C. 1395w–28(b)(6) ). Such study shall be conducted in consultation with the Centers for Medicare & Medicaid Services and Medicare Advantage plans as necessary and, to the extent data is available, shall include an analysis of the following: (A) The type of supplemental benefits provided to such enrollees, the total number of enrollees receiving each supplemental benefit, and whether the supplemental benefit is covered by the standard benchmark cost of the benefit or with an additional premium. (B) The frequency in which supplemental benefits are utilized by such enrollees. (C) The impact supplemental benefits have on— (i) indicators of the quality of care received by such enrollees, including overall health and function of the enrollees; (ii) the utilization of items and services for which benefits are available under the original Medicare fee-for-service program option under parts A and B of such title XVIII by such enrollees; and (iii) the amount of the bids submitted by Medicare Advantage Organizations for Medicare Advantage plans under such part C. (2) Report Not later than 5 years after the date of the enactment of this Act, the Comptroller General shall submit to Congress a report containing the results of the study conducted under paragraph (1), together with recommendations for such legislation and administrative action as the Comptroller General determines appropriate.