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Table VIII-10. 2026 RxHCC Model Predictive Ratios by Deciles of Predicted Risk (sorted low to high): Continuing Enrollee Model Segments, Proposed 2022/2023 Calibration Sample (HCPCS-filtered diagnoses; Reflects MFPs) Deciles Community, Non-Low Income, Age≥65 Community, Non-Low Income, Age<65 Community, Low Income, Age≥65 Community, Low Income, Age<65 Institutional Entire sample 1.000 1.000 1.000 1.000 1.000 First (lowest) decile 0.627 1.087 0.858 0.984 0.559 Second decile 1.174 1.291 1.160 1.380 0.874 Third decile 1.353 1.036 1.112 1.179 1.030 Fourth decile 1.264 1.046 1.031 1.103 1.055 Fifth decile 0.998 1.020 1.026 1.056 1.072 Sixth decile 0.965 1.003 1.027 0.976 1.060 Seventh decile 0.978 0.981 0.981 0.952 1.043 Eighth decile 0.958 0.945 0.967 0.940 1.020 Ninth decile 0.944 0.971 0.980 0.972 0.998 Tenth (highest) 1.017 1.004 0.998 0.997 0.973 Top 5% 1.020 1.005 1.000 1.008 0.978 Top 1% 1.009 0.994 1.009 1.044 0.999 Top 0.1% 0.971 1.009 1.012 1.001 1.018

Table VIII-11. 2026 RxHCC Model Predictive Ratios by Deciles of Predicted Risk (sorted low to high): New Enrollee Model Segments, Proposed 2022/2023 Calibration Sample (HCPCS-filtered diagnoses; Reflects MFPs) Deciles Non-Low Income Low Income Institutional Entire sample 1.000 1.000 1.000 First (lowest) decile 0.994 1.002 1.007 Second decile 0.982 0.999 0.962 Third decile 1.017 1.017 1.023 Fourth decile 1.004 0.983 1.011 Fifth decile 0.998 1.002 1.018 Sixth decile 0.990 1.006 0.973 Seventh decile 1.015 1.003 0.976 Eighth decile 1.003 0.991 1.033 Ninth decile 1.001 1.001 0.970 Tenth (highest) 0.999 1.001 1.021 Top 5% 0.992 0.975 0.992 Top 1% 0.992 1.044 0.986