but does not include bonuses, allowances, overtime pay, military pay, pay given in addition to the base pay of the position as fixed by law or regulation except as provided by subparagraphs (B) through (H) of this paragraph retroactive pay under section
5344 of this title in the case of a retired or deceased employee, uniform allowances under section
5901 of this title, or lump-sum leave payments under subchapter
VI of chapter
55 of this title. For an employee paid on a fee basis, the maximum amount of basic pay which may be used is $10,000;