HCPCS Level II C9309: Onasemnogene Abeparvovec Injection, Per Treatment
HCPCS Level II code C9309 represents the billed service for the administration of onasemnogene abeparvovec‑brve as an injection per treatment, a one-time systemic gene therapy infusion used to treat spinal muscular atrophy; service type is gene therapy administration and the typical site of service is an inpatient or ambulatory infusion center or hospital setting where specialized biologic therapies are delivered.
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