What is NDC 0591-2520?

0591-2520 is the product NDC for Chlorzoxazone, Chlorzoxazone 500 mg/1 tablet, listed with the FDA by Actavis Pharma, Inc.. It has 2 package NDCs, shown above in 10- and 11-digit form.

Actavis Pharma, Inc., NDC labeler code 0591. 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 0591-2520 | National Drug Code

Unfinished product

This listing is a drug for further processing, not a finished drug product dispensed or administered to patients. It is not normally billed.

NDC codes

FDA NDC Directory

Product NDC (as listed)0591-2520Labeler and product segments. Claims need a package NDC.

Product NDC at billing width00591-2520Add 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
0591-2520-00	0059125200000591252000	14080 TABLET in 1 BOX (0591-2520-00)Marketed from 22-AUG-11
0591-2520-77	0059125207700591252077	16896 TABLET in 1 CONTAINER (0591-2520-77)Marketed from 22-JUL-24

How the 11-digit form is made: The labeler segment has 4 digits, so one leading zero is added to it (4-4-2 → 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

Generic name (nonproprietary): chlorzoxazone
Active ingredients: Chlorzoxazone — 500 mg/1
Dosage form: Tablet
Labeler: Actavis Pharma, Inc.NDC labeler code 0591
Product type: Drug for further processing
Marketing category: Drug for further processing
Marketing start: Aug 22, 2011
Listing expires: Dec 31, 2026
Identifiers: Product ID 0591-2520_b79e689c-952a-48ee-9b76-f386a566936aSPL ID b79e689c-952a-48ee-9b76-f386a566936a

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 drug-specific HCPCS code in Med-Code's directory for this product. The directory is curated and not complete — check the current CMS HCPCS file before billing.

NDC on a medical claim

N400591252000 followed by a unit qualifier and the quantity

Package 00591-2520-00. 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

The FDA listing for this product does not reference a label (SPL) set.

About NDC 0591-2520

What is NDC 0591-2520?: 0591-2520 is the product NDC for Chlorzoxazone, Chlorzoxazone 500 mg/1 tablet, listed with the FDA by Actavis Pharma, Inc.. It has 2 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?: Actavis Pharma, Inc., NDC labeler code 0591. 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 500 mg/1	TabletOral	Advanced Rx of Tennessee, LLC	80425-0507	80425-0507-0180425-0507-0280425-0507-03
Chlorzoxazone	Chlorzoxazone 250 mg/1	TabletOral	Lifsa Drugs LLC	72336-225	72336-0225-60
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Bryant Ranch Prepack	71335-3122	71335-3122-0071335-3122-0171335-3122-02+7 more
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Cintex Services, LLC	24470-940	24470-0940-1024470-0940-50
Chlorzoxazone	Chlorzoxazone 375 mg/1	TabletOral	Aurobindo Pharma Limited	59651-305	59651-0305-01

All 36 Chlorzoxazone NDCs

NDC codes

Product information

Billing references

Product label

About NDC 0591-2520

Related NDCs: other Chlorzoxazone products