28 Tex. Admin. Code § 21.2817
Unless otherwise provided in this subchapter, contracts between HMOs or preferred provider carriers and preferred providers shall not include terms which:
Source Note:The provisions of this §21.2817 adopted to be effective October 2, 2001, 26 TexReg 7542; amended to be effective October 5, 2003, 28 TexReg 8647.