Chlorzoxazone NDC 16571-727

NDC codes

FDA NDC Directory

Product NDC (as listed)16571-727Labeler and product segments. Claims need a package NDC.

Product NDC at billing width16571-0727Add 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
16571-727-01	16571072701	100 TABLET in 1 BOTTLE (16571-727-01)Marketed from Apr 5, 2022
16571-727-50	16571072750	500 TABLET in 1 BOTTLE (16571-727-50)Marketed from Apr 5, 2022

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 — 750 mg/1
Dosage form: Tablet
Route: Oral
Labeler: Rising Pharma Holdings, Inc.
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 16571-727_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

N416571072701 followed by a unit qualifier and the quantity

Package 16571-0727-01. 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)

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 500 mg/1	TabletOral	Advanced Rx of Tennessee, LLC	80425-0507
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Bryant Ranch Prepack	71335-2433
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	A-S Medication Solutions	50090-7504
Chlorzoxazone	Chlorzoxazone 375 mg/1	TabletOral	Rising Pharma Holdings, Inc.	16571-725
Chlorzoxazone	Chlorzoxazone 500 mg/1	TabletOral	Rising Pharma Holdings, Inc.	16571-726