28 Tex. Admin. Code § 21.2823
The provisions of §§19.1724 and 21.2807 of this title (relating to Verification and Effect of Filing a Clean Claim) apply to a physician or provider that provides to an enrollee or insured of an HMO or preferred provider carrier:
Source Note:The provisions of this §21.2823 adopted to be effective October 5, 2003, 28 TexReg 8647.