Conn. Gen. Stat. § 38a-479kkk: Duty of good faith and fair dealing.

(a) Any pharmacy benefits manager shall exercise good faith and fair dealing in the performance of such pharmacy benefits manager's contractual duties to any health carrier, as defined in section 38a-591a, or other health benefit plan sponsor.

(b) Any pharmacy benefits manager shall notify the health carrier or other health benefit plan sponsor, in writing, of any activity, policy or practice of such pharmacy benefits manager that directly or indirectly presents any conflict of interest with the duties imposed by this section.

(c) Any pharmacy benefits manager shall have an obligation of good faith and fair dealing in performing such pharmacy benefits manager's duties with all parties, including, but not limited to, a health carrier or other health benefit plan sponsor with whom such pharmacy benefits manager interacts in the performance of pharmacy benefit management services.

(d) The Insurance Commissioner may adopt regulations, in accordance with the provisions of chapter 54, to implement the provisions of this section.