(1) If the child support order contains abatement language, the division of child support (DCS) administers the abatement under WAC 388-14A-3945.

(2) If the child support order was entered in Washington state and does not contain abatement language, DCS refers the child support order to the appropriate tribunal for the limited purpose of adding abatement language under WAC 388-14A-3940, except as provided in subsection (3) of this section.

(3) DCS may review for modification under WAC 388-14A-3901 when the child support order does not contain abatement language and the department is paying public assistance for the child or children.