HCPCS Level II
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J codes
J9358
Inj fam-trastu deru-nxki 1mg
Injection, fam-trastuzumab deruxtecan-nxki, 1 mg
Medicare coverage: Carrier judgment
Status: active (July 2026 file)
MUE: max 1000 units per day (practitioner), rationale: CMS Policy