A carrier, as a condition of a contract with a health care provider or in any other manner, may not prohibit a health care provider from discussing with or communicating to an enrollee, subscriber, public official, or other person information that is necessary or appropriate for the delivery of health care services, including communications that relate to an enrollee’s or subscriber’s right to appeal a coverage determination of a carrier with which the health care provider, enrollee, or subscriber does not agree and opinions and the basis of an opinion about public policy issues.