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Applicable Percentage Bid to Benchmark Ratio 0.95 78.8% 1 77.7% 1.075 77.2% 1.15 77.6% CMS-Hierarchical Condition Category (CMS-HCC) Risk Adjustment Model: • For non-PACE organizations: CMS is completing the phase-in of the 2024 CMS-HCC model as proposed in the CY 2026 Advance Notice by using 100 percent of the risk score calculated using the 2024 CMS-HCC risk adjustment model. • For PACE organizations: For CY 2026, CMS will begin phasing out the 2017 CMS- HCC model as proposed by calculating risk scores as a blend of 10 percent of the risk score calculated using the 2024 CMS-HCC risk adjustment model and 90 percent of the risk score calculated using the 2017 CMS-HCC risk adjustment model. CMS-HCC ESRD Risk Adjustment Models: • For non-PACE organizations: For CY 2026, CMS will continue to use the 2023 CMS- HCC ESRD risk adjustment models to calculate risk scores for beneficiaries in dialysis, transplant, and post-graft status. • For PACE organizations: For CY 2026, CMS will begin phasing out the 2019 CMS- HCC ESRD model as proposed by calculating risk scores as a blend of 10 percent of the risk score calculated with the 2023 CMS-HCC ESRD models and 90 percent of the risk score calculated using the 2019 CMS-HCC ESRD models. Frailty Adjustment: • For Fully Integrated Dual Eligible Special Needs Plans (FIDE SNPs): For CY 2026, CMS will use the frailty factors associated with the 2024 CMS-HCC model to calculate frailty scores for FIDE SNPs. FIDE SNP frailty scores will be compared to the PACE minimum frailty score calculated in the same manner to determine whether FIDE SNPs have a similar average level of frailty as the PACE program. • For PACE organizations: For CY 2026, CMS will calculate frailty scores using a blend of 90 percent of the frailty score calculated with the 2017 CMS-HCC model frailty factors and 10 percent of the frailty score calculated with the 2024 CMS-HCC model frailty factors. This is consistent with the blend CMS will use to calculate risk scores for PACE organizations. MA Coding Pattern Difference Adjustment: For CY 2026, CMS will apply the statutory minimum MA coding pattern difference adjustment of 5.90 percent.