Home Drug Codes J Codes J3397 · MEPSEVII
Updated July 1st, 2026

MEPSEVII J Code: J3397

Injection, vestronidase alfa-vjbk, 1 mg

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Medicare Payment Limit ?
Not published
CMS publishes none for Q3 2026
APC Payment Limit ?
$291.536
/ HCPCS billing unit · APC 9190
ASP ?
No current ASP
Not available for Q3 2026
WAC · AWP ?
$•••.••
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NDCs Crosswalked ?
1
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Drug & Product Overview

HCPCS Descriptor Injection, vestronidase alfa-vjbk, 1 mg
HCPCS Added Date January 1, 2019
Manufacturer Ultragenyx Pharmaceutical
Route of Administration Intravenous
Generic Status Single-Source; Branded
Dosage Type Single-Dose
Dosage Form Injection

About MEPSEVII

Mepsevii is a medication aligned to the HCPCS J Code: J3397 for billing, pricing, and reimbursement purposes in the United States. It is an Enzyme Replacement Therapy drug administered via the intravenous route and manufactured by Ultragenyx Pharmaceutical.

Manufacturers, reach out to us to add more information.

NDC Code Information

1 NDC package is crosswalked to J3397. Package detail is available to logged-in subscribers.

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MEPSEVII Pricing & Reimbursement

J3397 Private Payer Reimbursement
$273.92 / HCPCS unit as of Jan 2026

National median reimbursement across major commercial payers.

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UnitedHealthcare, BlueCross BlueShield, Aetna, Cigna

MEPSEVII CPT Administration Codes

The below list of CPT codes is intended for informational purposes only and may not be exhaustive. CPT® codes and descriptions are copyright American Medical Association (AMA). All rights reserved.

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)
Not on the CMS JW / JZ list

CMS does not include Mepsevii (J3397) on its list of HCPCS pertaining to single-dose containers. Per CMS guidelines, the JZ/JW wastage modifiers may not apply when billing J3397. Wastage billing guide →

MEPSEVII Medically Unlikely Edits (MUE)

The most billing units of J3397 Medicare will pay for one patient in one day, as published by CMS. 1 unit = 1 mg.

Practitioner Office & Hospital Outpatient
600 units / day
= 600 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 →

mg Enter a dose to see how many billing units it is and whether it is under the limit.

MEPSEVII 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.

Mucopolysaccharidosis VII (MPS VII, Sly syndrome)
Drug Class
Lysosomal beta Glucuronidase [EPC]

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Frequently Asked Questions

Is there an available Mepsevii billing and coding guide?
Our team has not identified a manufacturer-published source of billing and coding information for MEPSEVII.
Are there any available Mepsevii patient assistance programs?
MEPSEVII patient assistance information can be found through Ultragenyx. Visit Here →
Where can I find Mepsevii prescribing information?
MEPSEVII prescribing information can be found at the link below: Visit Here →
Where can I find Mepsevii side effect information?
Our team has not yet identified a source of side effects information for MEPSEVII. Please check back in a few weeks.
Does billing MEPSEVII require JZ/JW wastage modifiers?
CMS does not include MEPSEVII (J3397) on its list of HCPCS pertaining to single-dose containers. Per CMS guidelines, the JZ/JW wastage modifiers may not apply when billing J3397. For more information, visit the link below.

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