CFR›Title 5›Chapter I›Part 339 ContainsSubparts A–CCorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 PART 339—MEDICAL QUALIFICATION DETERMINATIONS Subparts A Subpart A—General Sections 339.101–339.104 B Subpart B—Medical Standards, Physical Requirements, and Medical Evaluation Programs Sections 339.201–339.206 C Subpart C—Medical Examinations Sections 339.301–339.306 Authority5 U.S.C. 1104(a), 1302(a), 3301, 3302, 3304, 3312, 3318, 3320, 3504, 5112; 39 U.S.C. 1005, Executive Order 10577, Rule II, codified as amended in 5 CFR 2.1(a).Source82 FR 5350, Jan. 18, 2017, unless otherwise noted. Previous 338 Part 338—Qualification Requirements (General) Next 340 Part 340—Other Than Full-Time Career Employment (Part-Time, Seasonal, On-Call, and Intermittent)