that in the case of any services covered under such plan which are provided to an individual on whose behalf child support enforcement is being carried out by the State agency under part D of subchapter IV of this chapter, the State shall—
(i)#
make payment for such service in accordance with the usual payment schedule under such plan for such services without regard to any third-party liability for payment for such services, if such third-party liability is derived (through insurance or otherwise) from the parent whose obligation to pay support is being enforced by such agency, if payment has not been made by such third party within 100 days after the date the provider of such services has initially submitted a claim to such third party for payment for such services, except that the State may make such payment within 30 days after such date if the State determines doing so is cost-effective and necessary to ensure access to care.; 6 and
(ii)#
seek reimbursement from such third party in accordance with subparagraph (B);