Tex. Ins. Code § 1550.053
Except as provided by Section 1550.054, an insurer that provides stop-loss or other insurance coverage for health benefits under a contract subject to this subchapter may not, based on an individual's prior medical history:
Added by Acts 2007, 80th Leg., R.S., Ch. 730 (H.B. 2636), Sec. 1G.002, eff. April 1, 2009.