Minn. Stat. § 62A.64: HEALTH INSURANCE; PROHIBITED AGREEMENTS.

An agreement between an insurer and a health care provider may not:

(1) prohibit, or grant the insurer an option to prohibit, the provider from contracting with other insurers or payors to provide services at a lower price than the payment specified in the contract;

(2) require, or grant the insurer an option to require, the provider to accept a lower payment in the event the provider agrees to provide services to any other insurer or payor at a lower price; or

(3) require, or grant the insurer an option of, termination or renegotiation of the existing contract in the event the provider agrees to provide services to any other insurer or payor at a lower price.