; or (2) to require any tribal health program to charge an Indian for services. . 199. Disease and injury prevention report Title VIII of the Indian Health Care Improvement Act ( 25 U.S.C. 1671 et seq.) (as amended by section 197) is amended by adding at the end the following: 829. Disease and injury prevention report Not later than 18 months after the date of enactment of the Indian Healthcare Improvement Act of 2017 , the Secretary shall submit to the Committee on Indian Affairs of the Senate and the Committees on Natural Resources and Energy and Commerce of the House of Representatives describing— (1) all disease and injury prevention activities conducted by the Service, independently or in conjunction with other Federal departments and agencies and Indian tribes; and (2) the effectiveness of those activities, including the reductions of injury or disease conditions achieved by the activities. . 200. Other GAO reports Title VIII of the Indian Health Care Improvement Act ( 25 U.S.C. 1671 et seq.) (as amended by section 198) is amended by adding at the end the following: 830. Other GAO reports (a) Coordination of services (1) Study and evaluation The Comptroller General of the United States shall conduct a study, and evaluate the effectiveness, of coordination of health care services provided to Indians— (A) through Medicare, Medicaid, or SCHIP; (B) by the Service; or (C) using funds provided by— (i) State or local governments; or (ii) Indian tribes. (2) Report Not later than 18 months after the date of enactment of the Indian Healthcare Improvement Act of 2017 , the Comptroller General shall submit to Congress a report— (A) describing the results of the evaluation under paragraph (1)