Relates to certain prohibitions in contracts or agreements by health maintenance organizations; prohibits clauses which entitle reimbursement at the lowest price or rate; prohibits contracts which restrict referral of patients based solely upon a health care provider’s status with a managed care product; prohibits disclosure of an enrollee’s diagnosis on a prescription as a condition for authorizing coverage for payment or dispensing of a prescription; and prohibits contracts which allow for the substitution of a pharmaceutical drug or agent by any person other than the prescribing health care professional.