(a) The board may temporarily exempt a license holder from the continuing medical education requirement on the basis of:
(1) catastrophic illness;
(2) military service outside this state for longer than one year;
(3) medical practice and residence outside the United States for longer than one year; or
(4) good cause shown on the written application of the license holder that provides evidence satisfactory to the board that the license holder is unable to comply with the requirement.
(b) A temporary exemption granted under Subsection (a) may not exceed one year but may be renewed.