CFR > Title 42 - Public Health > CHAPTER I—PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES > SUBCHAPTER M—INDIAN HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES (parts 136 to 138) > PART 136a—INDIAN HEALTH > SUBPART A—Purpose (§136a.1 to §136a.2) > 136a.1—Purpose of the regulations.