Section 205. Notwithstanding any provision of sections one hundred and eight, one hundred and ten, one hundred and ninety A, one hundred and ninety B and one hundred and ninety C of chapter one hundred and seventy-five to the contrary, no policy which provides supplemental coverage to medicare shall be delivered, issued for delivery or renewed unless the commissioner shall have approved the policy or certificate in writing nor unless the policy or certificate complies with standards promulgated by the commissioner for such policies and certificates provided, however, that nothing in this section shall be construed to apply to, affect or prohibit the issue of any general or blanket policy of insurance which provides supplemental coverage to medicare delivered, issued for delivery or renewed to: one or more employers or trade unions, the trustees of a fund established by one or more employers or trade unions, or a combination thereof, covering employees, former employees, or a combination thereof, or covering members or former members of the trade unions, or a combination thereof.

The commissioner shall promulgate regulations to implement this section.