No life insurance company doing business in this state, or an agent thereof, shall make a contract of insurance, or an agreement as to such contract, other than is plainly expressed in the policy issued thereon.
Ohio Rev. Code Ann. § 3999.04, under Chapter 3999 | Crimes Relating To Insurance.
Ohio Rev. Code Ann. § 3999.04
No life insurance company doing business in this state, or an agent thereof, shall make a contract of insurance, or an agreement as to such contract, other than is plainly expressed in the policy issued thereon.