Comparison of Proposed 2026 OPPS Addendum B with July 2025 Addendum B

This spreadsheet compares relative weights and payment rates at the HCPCS level, using 2026 OPPS proposed rule Addendum B compared to 2025 Addendum B (July 1, 2025 file), as downloaded from the CMS website. Spreadsheet cells highlighted in yellow were calculated by HFMA; all other information is from CMS. 

The Addendum B spreadsheet contains these 7 tabs:

• 2026 NPRM Add. B by HCPCS: compares 2025 and proposed 2026 status indicators, relative weights, and payment rates for all HCPCS codes included in proposed Addendum B; sorted by HCPCS code
• 2026 NPRM Add. B by APC: same as previous tab but sorted by APC and within APC by HCPCS code
• Status codes G and K: comparisons for separately payable drugs and biologicals with status indicator G or K in the 2026 proposed rule are shown in this tab
• 2026 NPRM Add. M: as supplied by CMS, Proposed HCPCS Codes for Assignment to Composite APCs for CY 2025
• 2026 NPRM Add. O: as supplied by CMS, New CPT and G – Codes Effective January 1, 2026; CMS request comments on OPPS status indicator and APC assignments and ASC payment indicator
• 2026 Status Indicators: as supplied by CMS, ADDENDUM D1.–PROPOSED OPPS PAYMENT STATUS INDICATORS FOR CY 2026
• 2026 Comment Indicators: as supplied by CMS, ADDENDUM D2.–PROPOSED OPPS COMMENT INDICATORS FOR CY 2026