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08.02.53a, Belantamab mafodotin-blmf (Blenrep)
Act
by Jun 30, 2026
Effective date
Jul 1, 2026
Identified
Jul 2, 2026
Summary
Independence Blue Cross is updating the billing code for Belantamab mafodotin-blmf (Blenrep) effective July 1, 2026. The unclassified codes C9399 and J3590 are being replaced with the specific HCPCS code J9053. This change requires billing teams to update their systems to use the new code for all Blenrep claims going forward.
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What to do
by Jun 30, 2026 · 4 steps
01Billing team must update all billing systems, claims processing software, and encounter templates to replace unclassified codes C9399 and J3590 with the new specific HCPCS code J9053 for Belantamab mafodotin-blmf (Blenrep) injections.
02Notify providers and clinical staff of the code change.
03On or after July 1, 2026, submit all Blenrep claims using J9053 only.
04Claims submitted with the old unclassified codes (C9399, J3590) after the effective date will be denied and require resubmission with the correct code.
Codes mentioned
J9053C9399J3590
Original notice
08.02.53a, Belantamab mafodotin-blmf (Blenrep)
medpolicy.ibx.com · Always check the source before changing claims.
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