Texas Insurance Code - INS § 1367.053. Coverage Required

(a) A health benefit plan that provides coverage for a family member of an insured or enrollee shall provide for each covered child from birth through the date of the child's sixth birthday coverage for:

(b) For purposes of Subsection (a), a covered child is a child who, as a result of the child's relationship to an insured or enrollee in a health benefit plan, would be entitled to coverage under an accident and health insurance policy under Section 1201.061, 1201.062, 1201.063, or 1201.064.

(c) In addition to the immunizations required under Subsection (a), a health maintenance organization that issues a health benefit plan shall provide under the plan coverage for immunization against rotovirus and any other immunization required for a child by law.