Section 484.330 - Process for determining and applying the value-based payment adjustment under the Home Health Value-Based Purchasing (HHVBP) Model(a)General. Competing home health agencies will be ranked within the larger-volume and smaller-volume cohorts in selected states based on the performance standards that apply to the HHVBP Model for the baseline year, and CMS will make value-based payment adjustments to the competing HHAs as specified in this section.(b)Calculation of the value-based payment adjustment amount. The value-based payment adjustment amount is calculated by multiplying the Home Health Prospective Payment final claim payment amount as calculated in accordance with § 484.205 by the payment adjustment percentage.(c)Calculation of the payment adjustment percentage. The payment adjustment percentage is calculated as the product of: The applicable percent as defined in § 484.320 , the competing HHA's Total Performance Score divided by 100, and the linear exchange function slope.