NDC codes

FDA NDC Directory
Product NDC (as listed)80425-0507Labeler and product segments. Claims need a package NDC.
Product NDC at billing width80425-0507Add the package segment from the table below.
Package NDCs as listed with the FDA, and the 11-digit 5-4-2 form used on claims. The highlighted digit is the added leading zero.
Package NDC11-digit (billing)PackageCopy
80425-0507-18042505070130 TABLET in 1 BOTTLE (80425-0507-1)Marketed from Mar 20, 2025
80425-0507-28042505070260 TABLET in 1 BOTTLE (80425-0507-2)Marketed from Mar 20, 2025
80425-0507-38042505070390 TABLET in 1 BOTTLE (80425-0507-3)Marketed from Mar 20, 2025

How the 11-digit form is made: The package segment has 1 digit, so one leading zero is added to it (5-4-1 → 5-4-2). Formatting the NDC does not by itself make it billable — the product, package and quantity must match what was dispensed or administered, and payer rules apply. Conversion rules

Product information

Brand name (proprietary)
Chlorzoxazone
Generic name (nonproprietary)
chlorzoxazone
Active ingredients
Chlorzoxazone — 500 mg/1
Dosage form
Tablet
Route
Oral
Labeler
Advanced Rx of Tennessee, LLCNDC labeler code 80425
Product type
Prescription drug
Marketing category
ANDA — Abbreviated New Drug Application (generic)Application ANDA 213126
Marketing start
Listing expires
Other FDA classes
Centrally-mediated Muscle Relaxation (Physiologic effect)
Identifiers
Product ID 80425-0507_30c9d90b-eba6-17be-e063-6394a90a8408SPL ID 30c9d90b-eba6-17be-e063-6394a90a8408SPL set ID 30c9b3ce-198d-0c16-e063-6394a90a857dRxCUI 197502UNII H0DE420U8G
Pharmacologic class
Muscle Relaxant

Billing references

What Med-Code can say about coding this product, and where each statement comes from. Nothing here is inferred from the name alone.

HCPCS codeNo match

No HCPCS code in Med-Code's directory. Oral products like this are usually dispensed by a pharmacy and billed by NDC.

NDC on a medical claim

N480425050701 followed by a unit qualifier and the quantity

Package 80425-0507-01. Unit qualifiers: F2 (international unit), GR (gram), ME (milligram), ML (milliliter), UN (unit (each)). The qualifier and quantity depend on what was given. About the N4 qualifier

Product label

Current FDA label (SPL), effective .

Indications (excerpt from the label)

INDICATIONS AND USAGE Chlorzoxazone is indicated as an adjunct to rest, physical therapy, and other measures for the relief of discomfort associated with acute, painful musculoskeletal conditions. The mode of action of this drug has not been clearly identified, but may be related to its sedative properties. Chlorzoxazone does not directly relax tense skeletal muscles in man.

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 80425-0507

What is NDC 80425-0507?
80425-0507 is the product NDC for Chlorzoxazone, Chlorzoxazone 500 mg/1 tablet, listed with the FDA by Advanced Rx of Tennessee, LLC. It has 3 package NDCs, shown above in 10- and 11-digit form.
What drug is associated with this NDC?
Chlorzoxazone.
What is the active ingredient?
Chlorzoxazone.
Who is the labeler?
Advanced Rx of Tennessee, LLC, NDC labeler code 80425. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Chlorzoxazone?
32 other product NDCs are listed under this name. See all Chlorzoxazone NDCs.
Is there a related HCPCS / J-code?
Not in Med-Code's curated HCPCS directory. See Billing references above.

Other finished products listed under the same name: strengths, forms and labelers.

Other Chlorzoxazone NDCs
ProductStrengthForm · routeLabelerProduct NDCPackage NDCs (11-digit)
ChlorzoxazoneChlorzoxazone 250 mg/1TabletOralHappy Robin, LLC87127-80187127-0801-60
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralREMEDYREPACK INC.70518-436470518-4364-0070518-4364-01
ChlorzoxazoneChlorzoxazone 375 mg/1TabletOralAdvanced Rx of Tennessee, LLC80425-052580425-0525-0180425-0525-0280425-0525-03
ChlorzoxazoneChlorzoxazone 750 mg/1TabletOralAdvanced Rx of Tennessee, LLC80425-052680425-0526-0180425-0526-0280425-0526-03
ChlorzoxazoneChlorzoxazone 250 mg/1TabletOralLifsa Drugs LLC72336-22572336-0225-60
ChlorzoxazoneChlorzoxazone 250 mg/1TabletOralCamber Pharmaceuticals, Inc.31722-97431722-0974-0131722-0974-0531722-0974-10+2 more
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralBryant Ranch Prepack71335-312271335-3122-0071335-3122-0171335-3122-02+7 more
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralCintex Services, LLC24470-94024470-0940-1024470-0940-50
ChlorzoxazoneChlorzoxazone 750 mg/1TabletOralAurobindo Pharma Limited59651-30759651-0307-01
ChlorzoxazoneChlorzoxazone 375 mg/1TabletOralAurobindo Pharma Limited59651-30559651-0305-01

All 33 Chlorzoxazone NDCs

Other NDCs under ANDA 213126

Products listed under the same FDA application: other strengths and forms, and repackagers who relabel the same product.

FDA NDC Directory listings under ANDA 213126
ProductStrengthForm · routeLabelerProduct NDC
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralBryant Ranch Prepack71335-2433
ChlorzoxazoneChlorzoxazone 750 mg/1TabletOralRising Pharma Holdings, Inc.16571-727
ChlorzoxazoneChlorzoxazone 375 mg/1TabletOralRising Pharma Holdings, Inc.16571-725
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralRising Pharma Holdings, Inc.16571-726
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralA-S Medication Solutions50090-7504

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