Tex. Occ. Code § 603.257
The medical board by rule shall establish:
Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. Sept. 1, 1999.
Acts 2005, 79th Leg., Ch. 231 (S.B. 403), Sec. 40, eff. September 1, 2005.
Acts 2015, 84th Leg., R.S., Ch. 838 (S.B. 202), Sec. 2.121, eff. September 1, 2015.