AN ACT TO PROHIBIT HEALTH INSURANCE PLANS FROM MODIFYING, ON RENEWAL, AN INSURED'S CONTRACTED BENEFIT LEVEL FOR ANY PRESCRIPTION DRUG THAT WAS APPROVED OR COVERED UNDER THE PLAN IN THE IMMEDIATELY PRECEDING PLAN YEAR AND PRESCRIBED DURING THAT YEAR FOR A MEDICAL CONDITION OR MENTAL ILLNESS; TO LIST MODIFICATIONS PROHIBITED; TO CLARIFY WHAT IS NOT PROHIBITED; AND FOR RELATED PURPOSES.