As an incident to requiring the payment of spousal support or child support, the court may order either party to provide medical support to the other party. Payments made to an insurer pursuant to this subdivision, either directly or by a deduction from wages, shall be deemed to be spousal support or installment payments for the distribution of marital property, in such proportion as the court shall direct: Provided, That if the court does not set forth in the order that a portion of the payments is to be deemed installment payments for the distribution of marital property, then all payments made pursuant to this section are spousal support. The designation of insurance coverage as spousal support under the provisions of this subdivision shall not, in and of itself, give rise to a subsequent modification of the order to provide for spousal support other than insurance for covering the costs of health care and hospitalization.