(g) Applicability date. The provisions of this section are applicable for plan years beginning on or after January 1, 2022, except that
paragraph (a)(18) of this section regarding the definition of the term “downcode” and
paragraph (d)(1)(ii) of this section regarding additional information that must be provided if the qualifying payment amount is based on a downcoded service code or modifier are applicable with respect to items or services provided or furnished on or after October 25, 2022, for plan years beginning on or after January 1, 2022.