Tex. Health & Safety Code § 313.007
(b) An attending physician, hospital, or nursing home or a person acting as an agent for or under the control of the physician, hospital, or nursing home is not subject to criminal or civil liability and has not engaged in unprofessional conduct if the medical treatment consented to under this chapter:
Added by Acts 1993, 73rd Leg., ch. 407, Sec. 1, eff. Sept. 1, 1993.