on or after January 1, 2019, payment under this paragraph for such breakthrough device shall be made for the 3-year period applicable to such breakthrough device under section 1899C(d)(2). The provisions of this clause shall also apply for purposes of transitional pass-through payment under section 1833(i)(2)(D). . (f) Effective date This section and the amendments made by this section shall take effect on the date of the enactment of this Act and, unless otherwise specified in this section (or in an amendment made by this section), shall apply to breakthrough devices (as defined in section 1899C(a), as added by subsection (a)) approved on or after January 1, 2019.