What is NDC 16571-726?

16571-726 is the product NDC for Chlorzoxazone, Chlorzoxazone 500 mg/1 tablet, listed with the FDA by Rising Pharma Holdings, Inc.. It has 2 package NDCs, shown above in 10- and 11-digit form.

Rising Pharma Holdings, Inc., NDC labeler code 16571. 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 16571-726 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)16571-726Labeler and product segments. Claims need a package NDC.

Product NDC at billing width16571-0726Add 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
16571-726-01	16571072601	100 TABLET in 1 BOTTLE (16571-726-01)Marketed from Apr 5, 2022
16571-726-50	16571072650	500 TABLET in 1 BOTTLE (16571-726-50)Marketed from Apr 28, 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 — 500 mg/1
Dosage form: Tablet
Route: Oral
Labeler: Rising Pharma Holdings, Inc.NDC labeler code 16571
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 213126
Marketing start: Apr 5, 2022
Listing expires: Dec 31, 2026
Other FDA classes: Centrally-mediated Muscle Relaxation (Physiologic effect)
Identifiers: Product ID 16571-726_b4a7f61d-613e-4d8f-a3fc-37143c6e19c3SPL ID b4a7f61d-613e-4d8f-a3fc-37143c6e19c3SPL set ID 1df6058b-7bf2-4246-9827-93fa023a5fd4RxCUI 197502, 1088934, 1088936UNII H0DE420U8GUPC 0316571727018
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

N416571072601 followed by a unit qualifier and the quantity

Package 16571-0726-01. 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 Jun 9, 2023.

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 16571-726

What is NDC 16571-726?: 16571-726 is the product NDC for Chlorzoxazone, Chlorzoxazone 500 mg/1 tablet, listed with the FDA by Rising Pharma Holdings, 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?: Rising Pharma Holdings, Inc., NDC labeler code 16571. 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

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
Product	Strength	Form · route	Labeler	Product NDC
Chlorzoxazone	Chlorzoxazone 375 mg/1	TabletOral	Rising Pharma Holdings, Inc.	16571-725
Chlorzoxazone	Chlorzoxazone 750 mg/1	TabletOral	Rising Pharma Holdings, Inc.	16571-727
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	A-S Medication Solutions	50090-7504
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Bryant Ranch Prepack	71335-2433
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Advanced Rx of Tennessee, LLC	80425-0507