Except as provided in section 3119.84 of the Revised Code, a court or child support enforcement agency may not retroactively modify an obligor's duty to pay a delinquent support payment.
Modifying duty to pay delinquent support retroactively
Ohio Rev. Code Ann. § 3119.83, under Chapter 3119 | Calculation Of Child Support Obligation - Health Insurance Coverage.
Ohio Rev. Code Ann. § 3119.83