(a) A person has standing to appeal a determination of the executive director under this subchapter only if the person is:
(1) an employee, participant, annuitant, or covered dependent participating in the group benefits program; or
(2) after the death of an employee, participant, annuitant, or covered dependent, the person's estate, personal representative, heir at law, or designated beneficiary.
(b) A person has no standing to appeal a determination of the executive director under this subchapter or to pursue a private cause of action against the state, the board of trustees, the retirement system, the executive director, an administering firm, or an employee of any of those persons based on a determination or the implementation by the board or executive director of the type or scope of plan design features under the group benefits program.