2021 Tennessee Code
Part 26 - Uniform Interstate Family Support Act — Registration, Enforcement, and Modification of Support Order
§ 36-5-2609. Procedure to Register Child Support Order of Another State for Modification

A party or support enforcement agency seeking to modify, or to modify and enforce, a child support order issued in another state shall register that order in this state in the same manner provided in §§ 36-5-2601 — 36-5-2608 if the order has not been registered.  A petition for modification may be filed at the same time as a request for registration, or later.  The pleading must specify the grounds for modification.