Section 484.225 - Annual update of the unadjusted national, standardized prospective payment rates(a) CMS annually updates the unadjusted national, standardized prospective payment rate on a calendar year basis (in accordance with section 1895(b)(1)(B) of the Act).(b) For 2007 and subsequent calendar years, in accordance with section 1895(b)(3)(B)(v) of the Act, in the case of a home health agency that does not submit home health quality data, as specified by the Secretary, the unadjusted national, standardized prospective rate is equal to the rate for the previous calendar year increased by the applicable home health market basket index amount minus 2 percentage points. Any reduction of the percentage change will apply only to the calendar year involved and will not be taken into account in computing the prospective payment amount for a subsequent calendar year.(c) For CY 2020, the national, standardized prospective 30-day payment amount is an amount determined by the Secretary. CMS annually updates this amount on a calendar year basis in accordance with paragraphs (a) and (b) of this section. 80 FR 68717 , Nov. 5, 2015, as amended at 83 FR 56629 , Nov. 13, 2018; 84 FR 60645 , Nov. 8, 2019 83 FR 56629 , 1/1/2019; 84 FR 60645 , 1/1/2020