5 U.S. Code § 5391
5.U.S. Code § 5391 is about Definitions. It is under Part 3 (Employees) Subpart D (Pay and Allowances) Subchapter 9 (Special Occupational Pay Systems) Chapter 53 (Pay Rates And Systems) of Title 5 (Government Organizations and Employees) of the Code.
For the purposes of this subchapter, “agency”, “employee”, and “position” have the meanings given them by section 5102.