What is NDC 72603-337?

72603-337 is the product NDC for potassium chloride, Potassium chloride 750 mg/1 tablet, extended release, listed with the FDA by Northstar Rx LLC. It has 1 package NDC, shown above in 10- and 11-digit form.

Northstar Rx LLC, NDC labeler code 72603. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.

What other NDCs exist for potassium chloride?

216 other product NDCs are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

potassium chloride NDC 72603-337 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)72603-337Labeler and product segments. Claims need a package NDC.

Product NDC at billing width72603-0337Add 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
72603-337-01	7260303370172603033701	100 TABLET, EXTENDED RELEASE in 1 BOTTLE (72603-337-01)Marketed from Jun 21, 2024

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): potassium chloride
Generic name (nonproprietary): potassium chloride
Active ingredients: Potassium chloride — 750 mg/1
Dosage form: Tablet, Extended release
Route: Oral
Labeler: Northstar Rx LLCNDC labeler code 72603
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 214422
Marketing start: Jun 21, 2024
Marketing end: Oct 31, 2026
Other FDA classes: Increased Large Intestinal Motility (Physiologic effect)Inhibition Large Intestine Fluid/Electrolyte Absorption (Physiologic effect)Osmotic Activity (Mechanism)Potassium Compounds (Chemical structure)
Identifiers: Product ID 72603-337_fdab4887-b1a0-49d9-8bf4-07fd86ec6552SPL ID fdab4887-b1a0-49d9-8bf4-07fd86ec6552SPL set ID b19a3fbf-cdbb-4f86-ac61-5dfb07e0a51aRxCUI 1801294, 1801298UNII 660YQ98I10UPC 0372603337013
Pharmacologic class: Osmotic Laxative; Potassium Salt

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

N472603033701 followed by a unit qualifier and the quantity

Package 72603-0337-01. 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 May 18, 2026.

Indications (excerpt from the label)

INDICATIONS AND USAGE BECAUSE OF REPORTS OF INTESTINAL AND GASTRIC ULCERATION AND BLEEDING WITH CONTROLLED-RELEASE POTASSIUM CHLORIDE PREPARATIONS, THESE DRUGS SHOULD BE RESERVED FOR THOSE PATIENTS WHO CANNOT TOLERATE OR REFUSE TO TAKE LIQUID OR EFFERVESCENT POTASSIUM PREPARATIONS OR FOR PATIENTS IN WHOM THERE IS A PROBLEM OF COMPLIANCE WITH THESE PREPARATIONS. For the treatment of patients with hypokalemia with or without metabolic alkalosis, in digitalis intoxication and in patients with hypokalemic familial periodic paralysis. If hypokalemia is the result of diuretic therapy, consideration should be given to the use of a lower dose of diuretic, which may be sufficient without leading to h…

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 72603-337

What is NDC 72603-337?: 72603-337 is the product NDC for potassium chloride, Potassium chloride 750 mg/1 tablet, extended release, listed with the FDA by Northstar Rx LLC. It has 1 package NDC, shown above in 10- and 11-digit form.
What drug is associated with this NDC?: potassium chloride.
What is the active ingredient?: Potassium chloride.
Who is the labeler?: Northstar Rx LLC, NDC labeler code 72603. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for potassium chloride?: 216 other product NDCs are listed under this name. See all potassium chloride 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 potassium chloride NDCs
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Potassium Chloridepotassium chloride oral	Potassium chloride 1.5 g/15mL	SolutionOral	Cardinal Health 107, LLC	55154-8026	55154-8026-05
Potassium Chloride	Potassium chloride 1.5 g/1.58g	Powder, For solutionOral	Cardinal Health 107, LLC	55154-8352	55154-8352-05
Potassium Chloride	Potassium chloride 750 mg/1	Tablet, Film coated, Extended releaseOral	Coupler LLC	67046-1032	67046-1032-03
Potassium Chloride	Potassium chloride 750 mg/1	Tablet, Film coated, Extended releaseOral	St. Mary's Medical Park Pharmacy	60760-423	60760-0423-90
Potassium Chloride	Potassium chloride 750 mg/1	Tablet, Extended releaseOral	Northwind Health Company, LLC	82868-111	82868-0111-90
Potassium Chloride	Potassium chloride 20 meq/15mL	SolutionOral	Ajenat Pharmaceuticals LLC	82983-411	82983-0411-47
Potassium Chloride	Potassium chloride 40 meq/15mL	SolutionOral	Ajenat Pharmaceuticals LLC	82983-412	82983-0412-47
Potassium Chloride	Potassium chloride 20 meq/1	Tablet, Extended releaseOral	Major Pharmaceuticals	0904-7548	00904-7548-61
Potassium Chloride	Potassium chloride 3 g/3.16g	For solutionOral	IPG Pharmaceuticals, Inc.	71085-083	71085-0083-30
Potassium Chloride	Potassium chloride 20 meq/15mL	SolutionOral	Aurobindo Pharma Limited	59651-959	59651-0959-47

All 217 potassium chloride NDCs

Other NDCs under ANDA 214422

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

FDA NDC Directory listings under ANDA 214422
Product	Strength	Form · route	Labeler	Product NDC
Potassium Chloride	Potassium chloride 750 mg/1	Tablet, Extended releaseOral	Camber Pharmaceuticals, Inc.	31722-133
Potassium Chloride	Potassium chloride 1125 mg/1	Tablet, Extended releaseOral	Camber Pharmaceuticals, Inc.	31722-134
Potassium Chloride	Potassium chloride 1500 mg/1	Tablet, Extended releaseOral	Camber Pharmaceuticals, Inc.	31722-135
Potassium Chloride	Potassium chloride 1500 mg/1	Tablet, Extended releaseOral	A-S Medication Solutions	50090-6253
Potassium Chloride	Potassium chloride 1500 mg/1	Tablet, Extended releaseOral	A-S Medication Solutions	50090-7616
Potassium Chloride	Potassium chloride 1500 mg/1	Tablet, Extended releaseOral	Bryant Ranch Prepack	71335-2045
Potassium Chloride	Potassium chloride 1500 mg/1	Tablet, Extended releaseOral	Aphena Pharma Solutions - Tennessee, LLC	71610-632
Potassium Chloride	Potassium chloride 750 mg/1	Tablet, Extended releaseOral	XLCare Pharmaceuticals, Inc.	72865-194
Potassium Chloride	Potassium chloride 1125 mg/1	Tablet, Extended releaseOral	XLCare Pharmaceuticals, Inc.	72865-195
Potassium Chloride	Potassium chloride 1500 mg/1	Tablet, Extended releaseOral	XLCare Pharmaceuticals, Inc.	72865-196