Tex. Insurance Code § 4151.154: DISCOUNT HEALTH CARE PROGRAMS.

A pharmacy benefit manager may not require a pharmacist or pharmacy to:

(1) accept or process a claim for prescription drugs under a discount health care program as defined by Section 7001.001 unless the pharmacist or pharmacy agrees in writing to accept or process the claim;

(2) participate in a specified provider network as a condition of processing a claim for prescription drugs under a discount health care program; or

(3) participate in, or process claims under, a discount health care program as a condition of participation in a provider network.

Added by Acts 2015, 84th Leg., R.S., Ch. 573 (H.B. 3028), Sec. 2, eff. September 1, 2015.