R.I. Gen. Laws § 5-37.5-5: Mandatory coverage for certain Lyme disease treatments.

Every individual or group hospital or medical-expense insurance policy or individual or group hospital or medical-services plan contract delivered, issued for delivery, or renewed in this state on or after January 1, 2004, shall provide for Lyme disease treatment as provided in chapters 18, 19, 20, and 41 of title 27.