(a) Unless enrollment occurs during an established enrollment period, enrollment in a group health benefit plan under Section 1207.002 takes effect on:
(1) the eligibility enrollment date specified in the written notice from the Health and Human Services Commission under Section 1207.002(a); or
(2) the first day of the first calendar month that begins at least 30 days after the date written notice or a written request is received by the plan issuer under Section 1207.002(a) or (b), as applicable.
(b) Notwithstanding Subsection (a), the individual must comply with a waiting period required under the state child health plan under Chapter 62, Health and Safety Code, or under the health insurance premium assistance program under Section 62.059, Health and Safety Code, as applicable.