Every group contract entered into by a medical service corporation with any policyholder shall be in writing and a contract form stating the terms and conditions thereof shall be furnished to the policyholder to be kept by him. No group contract form shall be used unless it contains the following provisions:
Any such group contract may contain a provision that all medical services paid for by a medical service corporation shall be in accordance with the accepted medical practices in the community at the time, but the corporation shall not be liable for injuries resulting from negligence, misfeasance, malfeasance, nonfeasance or malpractice on the part of any officer or employee or on the part of any physician in the course of rendering medical services to persons covered.
Any medical service corporation may classify persons covered whereby under specified circumstances a covered person may pay a participating physician for medical services an amount in addition to that payable by the corporation for medical services and the group contract shall contain the provisions thereof and specify such circumstances.
N.J.S. § 17:48A-7.3