NEXVIAZYME J Code: J0219

Drug & Product Overview

HCPCS Descriptor Injection, avalglucosidase alfa-ngpt, 4 mg

HCPCS Added Date April 1, 2022

Manufacturer Genzyme

Route of Administration Intravenous

Generic Status Single-Source; Branded

Dosage Type Single-Dose

Dosage Form Injection, Powder, Lyophilized, For Solution

About NEXVIAZYME

Nexviazyme is a medication aligned to the HCPCS J Code: J0219 for billing, pricing, and reimbursement purposes in the United States. This Enzyme Replacement Therapy medication is administered via the intravenous route and manufactured by Genzyme.

According to CMS Drug Use Information: This medication is used by people with a certain inherited condition (Pompe disease) to reduce high levels of a certain substance (glycogen) that builds up in the body. High levels of glycogen in the body may cause muscle weakness, heart problems, and breathing problems. Avalglucosidase alfa works by breaking down glycogen.

Disclaimer: This is a summary and does not contain all possible information about this product. For complete information about this product or your specific health needs, ask your healthcare professional.

NDC Code Information

Based on publicly available CMS files. The list of NDCs below is not exhaustive.

NDC Code	Drug	Manufacturer	Billing Units / Pkg	Package Size
58468-0426-01	Nexviazyme	Genzyme Corporation	25	100 MG / 10 ML

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NEXVIAZYME Pricing & Reimbursement

J0219 Private Payer Reimbursement

$81.23 / HCPCS unit as of Jan 2026

National median reimbursement across major commercial payers.

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Historical Graphing and Billing Calculator

per HCPCS unit

As of Q3 2026

NEXVIAZYME CPT Administration Codes

CPT Code	Description
96365	Intravenous infusion, for therapy, prophylaxis, or diagnosis (specify substance or drug); initial, up to 1 hour
96366	Intravenous infusion, for therapy, prophylaxis, or diagnosis (specify substance or drug); each additional hour (List separately in addition to code for primary procedure)

JW / JZ modifiers apply

CMS has identified Nexviazyme (J0219) as a HCPCS code with single-dose containers. Therefore, the JW/JZ wastage modifiers could be required for billing purposes. Wastage billing guide →

NEXVIAZYME Medically Unlikely Edits (MUE)

The most billing units of J0219 Medicare will pay for one patient in one day, as published by CMS. 1 unit = 4 mg.

Practitioner Office & Hospital Outpatient

750 units / day

= 3,000 mg per day

MAI 3 · Date of Service Edit: Clinical. Per-day limit based on clinical expectations; excess units are denied but may be appealed with documentation of medical necessity. See all MUE limits →

NEXVIAZYME Clinical Information

Indications and drug classification.

Treated Diseases & Conditions

This list of indications is not exhaustive and may be subject to errors. The information on BuyandBill.com is intended for informational purposes only and should not be used for medical advice.

Late-onset Pompe disease (lysosomal acid alpha-glucosidase [GAA] deficiency)

Drug Class

Hydrolytic Lysosomal Glycogen-specific Enzyme [EPC]alpha-Glucosidases [CS]

Frequently Asked Questions

Is there an available Nexviazyme billing and coding guide?

Billing and coding information for NEXVIAZYME can be found through Genzyme. Visit Here →

Are there any available Nexviazyme patient assistance programs?

NEXVIAZYME patient assistance information can be found through Genzyme. Visit Here →

Where can I find Nexviazyme prescribing information?

NEXVIAZYME prescribing information can be found at the link below: Visit Here →

Where can I find Nexviazyme side effect information?

Our team has not yet identified a source of side effects information for NEXVIAZYME. Please check back in a few weeks.

Does billing NEXVIAZYME require JZ/JW wastage modifiers?

CMS has identified NEXVIAZYME(J0219) as a HCPCS code with single-dose containers. Therefore, the JW/JZ wastage modifiers could be required for billing purposes. See CMS guidelines on use of the JZ and JW wastage modifiers below.

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