(a) A fraternal benefit society that provides for disability benefits shall keep the net premiums for disability benefits in a fund separate from all other benefit and expense funds and the valuation of all other business of the society.
(b) Notwithstanding Subsection (a), if a fraternal benefit society uses a combined premium table for both death and permanent total disability benefits:
(1) the valuation must be according to tables of reliable experience; and
(2) the society is not required to maintain a separation of those funds.