Home Drug Codes J Codes J3420 · CYANOCOBALAMIN
Updated July 1st, 2026

CYANOCOBALAMIN J Code: J3420

Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg

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Q4 2026 Medicare Payment Limit for J3420, effective October 1, 2026: $0.648 per HCPCS billing unit, down 5.1% from $0.683. From CMS's final file.

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Medicare Payment Limit ?
$0.683
/ HCPCS billing unit · Q3 2026
APC Payment Limit ?
Not published
CMS publishes none for Q3 2026
ASP ?
$•••.••
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WAC · AWP ?
$•••.••
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NDCs Crosswalked ?
47
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Drug & Product Overview

HCPCS Descriptor Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg
HCPCS Added Date January 1, 1986
Manufacturer Multiple Manufacturers
Route of Administration Intramuscular, Subcutaneous
Generic Status Multi-Source; Generic
Dosage Type Single-Dose, Multi-Dose
Dosage Form Injection | Injection, Solution | Not Available

About CYANOCOBALAMIN

Cyanocobalamin is a medication aligned to the HCPCS J Code: J3420 for billing, pricing, and reimbursement purposes in the United States. This Misc. medication is administered via the intramuscular or subcutaneous routes and manufactured by multiple companies.

According to CMS Drug Use Information: Cyanocobalamin is a man-made form of vitamin B12 used to treat low levels (deficiency) of this vitamin. Vitamin B12 helps your body use fat and carbohydrates for energy and make new protein. It is also important for normal blood, cells, and nerves. Most people get enough vitamin B12 in their diet, but a deficiency may occur in certain health conditions (such as poor nutrition, stomach/intestinal problems, infection, cancer). Serious vitamin B12 deficiency may result in anemia, stomach problems, and nerve damage.

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. Showing 5 of 47 NDCs — log in for the full crosswalk.

NDC Code Drug Manufacturer Billing Units / Pkg Package Size
00143-9619-01 Cyanocobalamin Hikma Pharmaceuticals USA Inc. 30 30000 MCG / 30 ML
00517-0031-25 Cyanocobalamin American Regent, Inc. 25 1000 MCG / 1 ML
16714-0302-10 Cyanocobalamin Northstar RxLLC 100 1000 MCG
25021-0502-01 Cyanocobalamin Sagent Pharmaceuticals 25 1000 MCG / 1 ML
50090-2709-00 Cyanocobalamin A-S Medication Solutions 25 1000 MCG
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CYANOCOBALAMIN Pricing & Reimbursement

J3420 Private Payer Reimbursement
$0.98 / HCPCS unit as of Jan 2026

National median reimbursement across major commercial payers.

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UnitedHealthcare, BlueCross BlueShield, Aetna, Cigna

Historical Graphing and Billing Calculator

per HCPCS unit
As of Q3 2026

CYANOCOBALAMIN 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
96372 Therapeutic, prophylactic, or diagnostic injection (specify substance or drug); intramuscular
Not on the CMS JW / JZ list

CMS does not include Cyanocobalamin (J3420) on its list of HCPCS pertaining to single-dose containers. Per CMS guidelines, the JZ/JW wastage modifiers may not apply when billing J3420. Wastage billing guide →

CYANOCOBALAMIN Medically Unlikely Edits (MUE)

The most billing units of J3420 Medicare will pay for one patient in one day, as published by CMS. 1 unit = 1000 mcg.

Practitioner Office & Hospital Outpatient
1 unit / day
= 1,000 mcg 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 →

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

CYANOCOBALAMIN 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.

Pernicious Anemia Pernicious Anemia (vitamin B12 deficiency due to malabsorption) Pernicious anemia Schilling Test (vitamin B12 absorption test) Schilling test (vitamin B12 absorption test) Vitamin B12 Absorption Test (Schilling Test) Vitamin B12 Deficiency (Normal Intestinal Absorption) Vitamin B12 absorption test (Schilling test) Vitamin B12 deficiency Vitamin B12 deficiency (Pernicious Anemia) Vitamin B12 deficiency (normal intestinal absorption) Vitamin B12 deficiency due to malabsorption (normal intestinal absorption, inadequate oral route) Vitamin B12 deficiency due to malabsorption (normal intestinal absorption, parenteral route needed) Vitamin B12 deficiency due to malabsorption (normal intestinal absorption, severe deficiency) Vitamin B12 deficiency with normal intestinal absorption Vitamin B12 deficiency — Schilling test (absorption test)
Drug Class
Vitamin B 12 [CS]Vitamin B12 [EPC]

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Frequently Asked Questions

Is there an available Cyanocobalamin billing and coding guide?
We have not yet identified a manufacturer source of Cyanocobalamin billing and coding information.
Are there any available Cyanocobalamin patient assistance programs?
Our team did not identify a source for Cyanocobalamin patient assistance information. Please reach out to our team if you feel that this is a mistake.
Where can I find Cyanocobalamin prescribing information?
Our team is still working to identify a prescribing information source for CYANOCOBALAMIN
Where can I find Cyanocobalamin side effect information?
Our team has not yet identified a source of side effects information for CYANOCOBALAMIN. Please check back in a few weeks.
Does billing CYANOCOBALAMIN require JZ/JW wastage modifiers?
CMS does not include CYANOCOBALAMIN (J3420) on its list of HCPCS pertaining to single-dose containers. Per CMS guidelines, the JZ/JW wastage modifiers may not apply when billing J3420. For more information, visit the link below.

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