NDC codes

FDA NDC Directory
Product NDC (as listed)63629-1586Labeler and product segments. Claims need a package NDC.
Product NDC at billing width63629-1586Add 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
63629-1586-1636291586016362915860120 TABLET in 1 BOTTLE (63629-1586-1)Marketed from Oct 8, 2024
63629-1586-2636291586026362915860230 TABLET in 1 BOTTLE (63629-1586-2)Marketed from Oct 8, 2024
63629-1586-3636291586036362915860340 TABLET in 1 BOTTLE (63629-1586-3)Marketed from Oct 22, 2012
63629-1586-4636291586046362915860490 TABLET in 1 BOTTLE (63629-1586-4)Marketed from Oct 8, 2024
63629-1586-5636291586056362915860560 TABLET in 1 BOTTLE (63629-1586-5)Marketed from Oct 8, 2024
63629-1586-66362915860663629158606100 TABLET in 1 BOTTLE (63629-1586-6)Marketed from Oct 8, 2024
63629-1586-7636291586076362915860714 TABLET in 1 BOTTLE (63629-1586-7)Marketed from Oct 8, 2024
63629-1586-863629158608636291586087 TABLET in 1 BOTTLE (63629-1586-8)Marketed from Oct 8, 2024
63629-1586-96362915860963629158609120 TABLET in 1 BOTTLE (63629-1586-9)Marketed from Jul 18, 2012

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
Bryant Ranch PrepackNDC labeler code 63629
Product type
Prescription drug
Marketing category
ANDA — Abbreviated New Drug Application (generic)Application ANDA 089859
Marketing start
Listing expires
Other FDA classes
Centrally-mediated Muscle Relaxation (Physiologic effect)
Identifiers
Product ID 63629-1586_8f1a738f-23de-466c-83ee-f6f2ddd62799SPL ID 8f1a738f-23de-466c-83ee-f6f2ddd62799SPL set ID 5e6889c9-a091-4622-0a00-ad0fc1830f78RxCUI 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

N463629158601 followed by a unit qualifier and the quantity

Package 63629-1586-01. 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 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 63629-1586

What is NDC 63629-1586?
63629-1586 is the product NDC for Chlorzoxazone, Chlorzoxazone 500 mg/1 tablet, listed with the FDA by Bryant Ranch Prepack. It has 9 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?
Bryant Ranch Prepack, NDC labeler code 63629. 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
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/1TabletOralCamber Pharmaceuticals, Inc.31722-97431722-0974-0131722-0974-0531722-0974-10+2 more
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralAdvanced Rx of Tennessee, LLC80425-050780425-0507-0180425-0507-0280425-0507-03
ChlorzoxazoneChlorzoxazone 250 mg/1TabletOralLifsa Drugs LLC72336-22572336-0225-60
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 375 mg/1TabletOralAurobindo Pharma Limited59651-30559651-0305-01

All 36 Chlorzoxazone NDCs

Other NDCs under ANDA 089859

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

FDA NDC Directory listings under ANDA 089859
ProductStrengthForm · routeLabelerProduct NDC
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralA-S Medication Solutions50090-0315
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralPD-Rx Pharmaceuticals, Inc.55289-633
ChlorzoxazoneChlorzoxazone 500 mg/1TabletOralProficient Rx LP63187-317

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