(a) Subject to the limitations identified in §26.411 of this title (relating to Service Areas for Health Carriers Offering Coverage Through a Health Group Cooperative), a health carrier may elect to not offer or issue coverage to health group cooperatives or may elect to offer or issue coverage to one or more health group cooperatives of its choosing.(b) Notwithstanding subsection (a) of this section, a health carrier must comply with the guaranteed issuance requirements of Insurance Code Chapter 1501 (concerning Health Insurance Portability and Availability Act) and this chapter with respect to offering and issuing coverage to a health group cooperative that:(1) consists of only small employers;(2) has elected to restrict membership in the cooperative to 50 employees; and(3) has notified TDI consistent with §26.401(e) of this title (relating to Establishment of Health Group Cooperatives).