What is NDC 64980-582?

64980-582 is the product NDC for Chlorzoxazone, Chlorzoxazone 250 mg/1 tablet, listed with the FDA by Rising Pharma Holdings, Inc.. It has 1 package NDC, shown above in 10- and 11-digit form.

Rising Pharma Holdings, Inc., NDC labeler code 64980. 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?

35 other product NDCs are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

Chlorzoxazone NDC 64980-582 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)64980-582Labeler and product segments. Claims need a package NDC.

Product NDC at billing width64980-0582Add 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 NDC	11-digit (billing)	Package	Copy
64980-582-06	64980058206	60 TABLET in 1 BOTTLE (64980-582-06)Marketed from Aug 9, 2023

How the 11-digit form is made: The product segment has 3 digits, so one leading zero is added to it (5-3-2 → 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 — 250 mg/1
Dosage form: Tablet
Route: Oral
Labeler: Rising Pharma Holdings, Inc.NDC labeler code 64980
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 216925
Marketing start: Aug 9, 2023
Listing expires: Dec 31, 2026
Other FDA classes: Centrally-mediated Muscle Relaxation (Physiologic effect)
Identifiers: Product ID 64980-582_566bef40-8065-4ade-a39e-379504f0c430SPL ID 566bef40-8065-4ade-a39e-379504f0c430SPL set ID e0d10d67-9716-450b-b8a9-4e157008864eRxCUI 197501UNII 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

N464980058206 followed by a unit qualifier and the quantity

Package 64980-0582-06. 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 Sep 17, 2025.

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 64980-582

What is NDC 64980-582?: 64980-582 is the product NDC for Chlorzoxazone, Chlorzoxazone 250 mg/1 tablet, listed with the FDA by Rising Pharma Holdings, Inc.. It has 1 package NDC, 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?: Rising Pharma Holdings, Inc., NDC labeler code 64980. 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?: 35 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
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Chlorzoxazone	Chlorzoxazone 250 mg/1	TabletOral	Happy Robin, LLC	87127-801	87127-0801-60
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	REMEDYREPACK INC.	70518-4364	70518-4364-0070518-4364-01
Chlorzoxazone	Chlorzoxazone 375 mg/1	TabletOral	Advanced Rx of Tennessee, LLC	80425-0525	80425-0525-0180425-0525-0280425-0525-03
Chlorzoxazone	Chlorzoxazone 750 mg/1	TabletOral	Advanced Rx of Tennessee, LLC	80425-0526	80425-0526-0180425-0526-0280425-0526-03
Chlorzoxazone	Chlorzoxazone 250 mg/1	TabletOral	Camber Pharmaceuticals, Inc.	31722-974	31722-0974-0131722-0974-0531722-0974-10+2 more
Chlorzoxazone	Chlorzoxazone 250 mg/1	TabletOral	Lifsa Drugs LLC	72336-225	72336-0225-60
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Advanced Rx of Tennessee, LLC	80425-0507	80425-0507-0180425-0507-0280425-0507-03
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Cintex Services, LLC	24470-940	24470-0940-1024470-0940-50
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Bryant Ranch Prepack	71335-3122	71335-3122-0071335-3122-0171335-3122-02+7 more
Chlorzoxazone	Chlorzoxazone 375 mg/1	TabletOral	Aurobindo Pharma Limited	59651-305	59651-0305-01

All 36 Chlorzoxazone NDCs