Comparison of Proposed 2027 OPPS Addendum B with July 2026 Addendum B

This spreadsheet compares relative weights and payment rates at the HCPCS level, using proposed rule Addendum B compared to 2026 Addendum B (July 2, 2026, file).

The Addendum B spreadsheet contains these 8 tabs:

• 2027 NPRM Add. B by HCPCS: compares 2026 and proposed 2027 status indicators, relative weights, and payment rates forall HCPCS codes included in proposed Addendum B; sorted by HCPCS code
• 2027 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
• SAMS_Status_Code_O1: comparison for Software as a Medical Service with status indicator O1
• 2027 NPRM Add. M: as supplied by CMS, Proposed HCPCS Codes for Assignment to Composite APCs for CY 2027
• 2027 NPRM Add. O: as supplied by CMS, New CPT and G – Codes Effective January 1, 2027; CMS requests comments on OPPS status indicator and APC assignments and ASC payment indicator.
• 2027 Status Indicators: as supplied by CMS, ADDENDUM D1.–PROPOSED OPPS PAYMENT STATUS INDICATORS FOR CY 2027
• 2027 Comment Indicators: as supplied by CMS, ADDENDUM D2.—PROPOSED OPPS COMMENT INDICATORS FOR CY 2027