45 CFR § 302.50 - Assignment of rights to support.
The State plan shall provide as follows:
(a) An assignment of support rights, as defined in § 301.1 of this chapter, constitutes an obligation owed to the State by the individual responsible for providing such support. Such obligation shall be established by:
(1) Order of a court of competent jurisdiction or of an administrative process; or
(b) The amount of the obligation described in paragraph (a) of this section shall be:
(1) The amount specified in the order of a court of competent jurisdiction or administrative process which covers the assigned support rights.
(2) If there is no court or administrative order, an amount determined in a record by the IV-D agency as part of the legal process referred to in paragraph (a)(2) of this section in accordance with the requirements of § 302.56.
(d) Any amounts which represent support payments collected from an individual responsible for providing support under the State plan shall reduce, dollar for dollar, the amount of his obligation under this section.
(e) No portion of any amounts collected which represent an assigned support obligation defined under § 301.1 of this chapter may be used to satisfy a medical support obligation unless the court or administrative order designates a specific dollar amount for medical purposes.