Tex. Ins. Code § 1507.051

The legislature recognizes the need for individuals and employers in this state to have the opportunity to choose health maintenance organization plans that are more affordable and flexible than existing market health care plans offered by health maintenance organizations. The legislature, therefore, seeks to increase the availability of health care plans by allowing health maintenance organizations authorized to operate health maintenance organizations in this state to issue group or individual evidences of coverage that, in whole or in part, do not offer or provide state-mandated health benefits.