N.Y. Comp. Codes R. & Regs. tit. 18, § 422.5
(d) Where it is determined that a referral to the child support enforcement unit of the social services district is appropriate the social services district must:
(2) provide necessary documentation to make such referral in accordance with the procedures of the child support enforcement unit of the social services district and transmit such information to the child support enforcement unit of the social services district;
(ii) to the extent available, necessary documentation includes but is not limited to the following concerning absent parents, putative fathers and/or legally responsible relatives:
(iii) necessary documentation includes but is not limited to the following concerning children in foster care:
(3) determine the costs of foster care for each foster child for whom a referral is to be made in accordance with standards established by the department pursuant to Part 427 of this Title and transmit this information as part of the referral to the child support enforcement unit of the social services district. For the purposes of this Part, the costs of foster care are:
(iii) those costs that are equivalent to the amount of any adoption subsidy payment provided in accordance with section 421.24 of this Title.
Nothing herein is intended to preclude the right of the State and social services district to recover from the parents the costs of any medical assistance paid on behalf of the child;