Code of Federal Regulations Title 5. Administrative Personnel § 5.531.223 Rates of basic pay that may not be used as the highest previous rate

(a) A rate received under an appointment as an expert or consultant under 5 U.S.C. 3109;

(b) A rate received in a position to which the employee was temporarily promoted for less than 1 year, except upon permanent placement in a position at the same or higher grade;

(c) A rate received in a position from which the employee was reassigned or reduced in grade for failure to satisfactorily complete a probationary period as a supervisor or manager;

(d) A rate received by an individual while employed by the government of the District of Columbia who was first employed by that government on or after October 1, 1987;

(e) A rate received by an individual while employed by a Department of Defense or Coast Guard nonappropriated fund instrumentality;

(f) A rate received solely during a period of interim relief under 5 U.S.C. 7701(b)(2)(A);

(g) A special rate established under 5 U.S.C. 5305 and 5 CFR part 530, subpart C, or 38 U.S.C. 7455 (except as provided in § 531.222(c));

(h) A rate received under a void appointment or a rate otherwise contrary to applicable law or regulation;

(i) A rate received as a member of the uniformed services;  or

(j) A retained rate under 5 U.S.C. 5363 or a similar rate under another legal authority.