Ohio Rev. Code Ann. § 3923.333

Medicare supplement policies shall return to policyholders benefits that are reasonable in relation to the premium charged. The superintendent of insurance shall issue reasonable rules to establish minimum standards for loss ratios of medicare supplement policies on the basis of incurred claims experience, or incurred health care expenses where coverage is provided by a health insuring corporation on a service rather than reimbursement basis, and earned premiums in accordance with accepted actuarial principles and practices.