For the purposes of this subchapter, the 11 Texas geographic regions that an insurer is required to use for reporting data under § 3.3709 of this title (relating to Annual Network Adequacy Report) are defined based on the public health regions designated under Health and Safety Code § 121.007, concerning Public Health Regions, and listed in the annual network adequacy report form.
28 Tex. Admin. Code § 3.3711