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ESRD services; CMS-related billing updates

Blue Cross Blue Shield of Kansas·KS · Nephrology·Coding
Effective date
Jul 1, 2026
We identified it
Jun 19, 2026
Days to comply
11 days

Summary

Effective July 1, 2026, ESRD facilities must discontinue using the AX modifier for dialysis services and begin billing hemodiafiltration services using Revenue code 0829 and HCPCS code 90999. These CMS-related billing updates apply to End-Stage Renal Disease services.

Action Required

Before Jul 1, 2026
By July 1, 2026: Billing team must update ESRD billing procedures to remove AX modifier from all dialysis service claims and configure billing system to use Revenue code 0829 with HCPCS code 90999 for hemodiafiltration services. Continue using current billing requirements for services rendered before July 1, 2026.

Affected Billing Codes

90999