Synopsis As Introduced Amends the Illinois Insurance Code. Provides that an individual or group policy of accident and health insurance that is amended, delivered, issued, or renewed on or after January 1, 2021 shall cover a medically necessary hypofractionated proton therapy protocol to deliver a biological effective dose by paying the same aggregate amount as would be paid for the delivery of the same biological effective dose with a standard radiation therapy protocol delivered with intensity modulated radiation therapy for the same indication if specified conditions are satisfied. Provides standards concerning the aggregate amount chargeable to or payable by an eligible patient for a covered course of hypofractionated proton therapy. Provides that proton therapy coverage may not impose an annual deductible, coinsurance, or other cost-sharing limitation that is greater than that required for radiation therapy and other similar benefits within the insurance policy or contract. Defines terms. Effective January 1, 2021.