(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:
(1) immunization against:
(A) diphtheria;
(B) haemophilus influenzae type b;
(C) hepatitis B;
(D) measles;
(E) mumps;
(F) pertussis;
(G) polio;
(H) rubella;
(I) tetanus; and
(J) varicella; and
(2) any other immunization that is required for the child by law.
(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 § 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.