CEREBYX Q Code: Q2009

Drug & Product Overview

HCPCS Descriptor Injection, fosphenytoin, 50 mg phenytoin equivalent

HCPCS Added Date July 1, 2000

Manufacturer Multiple Manufacturers

Route of Administration Intramuscular, Intravenous

Generic Status Multi-Source; Generic

Dosage Type Single-Dose

Dosage Form Injection | Injection, Solution

About CEREBYX

Cerebyx is a medication aligned to the HCPCS Q Code: Q2009 for billing, pricing, and reimbursement purposes in the United States. This Neurology medication is administered via the intramuscular or intravenous routes and manufactured by multiple companies.

Manufacturers, reach out to us to add more information.

NDC Code Information

16 NDC packages are crosswalked to Q2009. Package detail is available to logged-in subscribers.

NDC Code	Drug	Manufacturer	Billing Units / Pkg	Package Size
•••••-••••-•• Log in to view	CEREBYX
	CEREBYX
	CEREBYX
	CEREBYX

Login to view 16 NDC packages View pricing, complete NDC-to-HCPCS alignments, and package details.

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CEREBYX Pricing & Reimbursement

Q2009 Private Payer Reimbursement

$2.42 / HCPCS unit as of Jan 2026

National median reimbursement across major commercial payers.

Create an account on PayerPrice for more information →

CEREBYX 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)
96374 Login for More	Therapeutic, prophylactic, or diagnostic injection (specify substance or drug), IV push, single, or initial substance/drug Login for More

JW / JZ modifiers apply

CMS has identified Cerebyx (Q2009) as a HCPCS code with single-dose containers. Therefore, the JW/JZ wastage modifiers could be required for billing purposes. Wastage billing guide →

CEREBYX Medically Unlikely Edits (MUE)

The most billing units of Q2009 Medicare will pay for one patient in one day, as published by CMS. 1 unit = 50 mg pe/ml.

Practitioner Office & Hospital Outpatient

100 units / day

= 5,000 mg pe/ml 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 →

CEREBYX 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.

Generalized tonic-clonic status epilepticus Prevention and treatment of seizures during neurosurgery Short-term substitution for oral phenytoin when oral administration is not possible

Drug Class

Anti-epileptic Agent [EPC]Cytochrome P450 1A2 Inducers [MoA]Cytochrome P450 2B6 Inducers [MoA]Cytochrome P450 2C19 Inducers [MoA]Cytochrome P450 2C8 Inducers [MoA]Cytochrome P450 2C9 Inducers [MoA]Cytochrome P450 2D6 Inducers [MoA]Cytochrome P450 3A Inducers [MoA]Decreased Central Nervous System Disorganized Electrical Activity [PE]

Frequently Asked Questions

Is there an available Cerebyx billing and coding guide?

We have not yet identified a manufacturer source of Cerebyx billing and coding information.

Are there any available Cerebyx patient assistance programs?

Our team did not identify a source for Cerebyx patient assistance information. Please reach out to our team if you feel that this is a mistake.

Where can I find Cerebyx prescribing information?

Our team is still working to identify a prescribing information source for CEREBYX

Where can I find Cerebyx side effect information?

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

Does billing CEREBYX require JZ/JW wastage modifiers?

CMS has identified CEREBYX(Q2009) 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.

About BuyandBill.com:

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