J3399 Injection onase abepar-xioi treat
Also known as: onasemnogene abeparvovec, Zolgensma, spinal muscular atrophy gene therapy
Onasemnogene abeparvovec-xioi (Zolgensma) treatment per injection is gene therapy for spinal muscular atrophy delivery.
In Plain Language
genetic neuromuscular disease treatment; gene therapy for muscle weakness
Clinical Context
Gene therapy for spinal muscular atrophy caused by survival motor neuron gene mutations. Single intravenous infusion delivers functional SMN gene. Prevents progression of muscle weakness in early-onset spinal muscular atrophy.
RVU Information
CPT J3399 does not have a physician work RVU assigned by CMS. This is typical for supply, drug, and equipment codes — reimbursement is based on Average Sales Price (ASP), fee schedules, or payer contracts rather than the RVU system.
Billing & Documentation
J-codes represent drugs administered by a healthcare provider (not self-administered). Documentation must include the drug name, dosage, route of administration, and medical necessity. Most payers require the National Drug Code (NDC) on the claim. Bill the appropriate administration code (96365-96379) in addition to the drug code.
Specialties
Frequently Asked Questions
What is CPT code J3399?
CPT J3399 (Injection onase abepar-xioi treat) is a J Codes (Drugs) code. Onasemnogene abeparvovec-xioi (Zolgensma) treatment per injection is gene therapy for spinal muscular atrophy delivery.
How is J3399 administered?
CPT J3399 is administered by a healthcare provider, typically via injection or infusion. Gene therapy for spinal muscular atrophy caused by survival motor neuron gene mutations. Single intravenous infusion delivers functional SMN gene. Prevents progression of muscle weakness in early-onset spinal muscular atrophy. It is used by Neurology, Gene Therapy, Pediatrics.
When is CPT J3399 used?
Gene therapy for spinal muscular atrophy caused by survival motor neuron gene mutations. Single intravenous infusion delivers functional SMN gene. Prevents progression of muscle weakness in early-onset spinal muscular atrophy.
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CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.