What is NDC 63304-721?

63304-721 is the product NDC for Diltiazem hydrochloride, Diltiazem hydrochloride 300 mg/1 capsule, extended release, listed with the FDA by Sun Pharmaceutical Industries, Inc.. It has 3 package NDCs, shown above in 10- and 11-digit form.

Sun Pharmaceutical Industries, Inc., NDC labeler code 63304. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.

What other NDCs exist for Diltiazem hydrochloride?

220 other product NDCs are listed under this name.

Is there a related HCPCS / J-code?

Not in Med-Code's curated HCPCS directory.

Diltiazem hydrochloride NDC 63304-721 | National Drug Code

NDC codes

FDA NDC Directory

Product NDC (as listed)63304-721Labeler and product segments. Claims need a package NDC.

Product NDC at billing width63304-0721Add 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
63304-721-05	63304072105	500 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (63304-721-05)Marketed from Oct 31, 2018
63304-721-30	63304072130	30 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (63304-721-30)Marketed from Oct 31, 2018
63304-721-90	63304072190	90 CAPSULE, EXTENDED RELEASE in 1 BOTTLE (63304-721-90)Marketed from Oct 31, 2018

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): Diltiazem hydrochloride
Generic name (nonproprietary): diltiazem hydrochloride
Active ingredients: Diltiazem hydrochloride — 300 mg/1
Dosage form: Capsule, Extended release
Route: Oral
Labeler: Sun Pharmaceutical Industries, Inc.NDC labeler code 63304
Product type: Prescription drug
Marketing category: ANDA — Abbreviated New Drug Application (generic)Application ANDA 203023
Marketing start: Oct 31, 2018
Listing expires: Dec 31, 2026
Other FDA classes: Calcium Channel Antagonists (Mechanism)Cytochrome P450 3A4 Inhibitors (Mechanism)
Identifiers: Product ID 63304-721_35b4a94c-9d26-e406-e063-6394a90aa9fcSPL ID 35b4a94c-9d26-e406-e063-6394a90aa9fcSPL set ID 976d9dd0-4f11-4439-b84e-0c0f0e018d8bRxCUI 830795, 830801, 830837, 830845, 830861UNII OLH94387TE
Pharmacologic class: Calcium Channel Blocker

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

N463304072105 followed by a unit qualifier and the quantity

Package 63304-0721-05. 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 22, 2025.

Indications (excerpt from the label)

INDICATIONS AND USAGE Diltiazem hydrochloride extended-release capsules, USP are indicated for the treatment of hypertension. It may be used alone or in combination with other antihypertensive medications. Diltiazem hydrochloride extended-release capsules, USP are indicated for the management of chronic stable angina and angina due to coronary artery spasm.

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 63304-721

What is NDC 63304-721?: 63304-721 is the product NDC for Diltiazem hydrochloride, Diltiazem hydrochloride 300 mg/1 capsule, extended release, listed with the FDA by Sun Pharmaceutical Industries, Inc.. It has 3 package NDCs, shown above in 10- and 11-digit form.
What drug is associated with this NDC?: Diltiazem hydrochloride.
What is the active ingredient?: Diltiazem hydrochloride.
Who is the labeler?: Sun Pharmaceutical Industries, Inc., NDC labeler code 63304. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Diltiazem hydrochloride?: 220 other product NDCs are listed under this name. See all Diltiazem hydrochloride 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 Diltiazem hydrochloride NDCs
Product	Strength	Form · route	Labeler	Product NDC	Package NDCs (11-digit)
Diltiazem hydrochloride	Diltiazem hydrochloride 30 mg/1	TabletOral	Zydus Lifesciences Limited	70771-1929	70771-1929-0170771-1929-05
Diltiazem hydrochloride	Diltiazem hydrochloride 60 mg/1	TabletOral	Zydus Lifesciences Limited	70771-1930	70771-1930-0170771-1930-05
Diltiazem hydrochloride	Diltiazem hydrochloride 90 mg/1	TabletOral	Zydus Lifesciences Limited	70771-1931	70771-1931-0170771-1931-05
Diltiazem hydrochloride	Diltiazem hydrochloride 120 mg/1	TabletOral	Zydus Lifesciences Limited	70771-1932	70771-1932-0170771-1932-05
Diltiazem hydrochloride	Diltiazem hydrochloride 90 mg/1	TabletOral	Viona Pharmaceuticals Inc	72578-201	72578-0201-0172578-0201-05
Diltiazem hydrochloride	Diltiazem hydrochloride 30 mg/1	TabletOral	Viona Pharmaceuticals Inc	72578-199	72578-0199-0172578-0199-05
Diltiazem hydrochloride	Diltiazem hydrochloride 60 mg/1	TabletOral	Viona Pharmaceuticals Inc	72578-200	72578-0200-0172578-0200-05
Diltiazem hydrochloride	Diltiazem hydrochloride 120 mg/1	TabletOral	Viona Pharmaceuticals Inc	72578-202	72578-0202-0172578-0202-05
Diltiazem Hydrochloride	Diltiazem hydrochloride 90 mg/1	Capsule, Extended releaseOral	Safecor Health LLC	48433-031	48433-0031-20
Diltiazem Hydrochloride	Diltiazem hydrochloride 60 mg/1	Capsule, Extended releaseOral	Safecor Health LLC	48433-030	48433-0030-20

All 221 Diltiazem hydrochloride NDCs

Other NDCs under ANDA 203023

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

FDA NDC Directory listings under ANDA 203023
Product	Strength	Form · route	Labeler	Product NDC
Diltiazem hydrochloride	Diltiazem hydrochloride 240 mg/1	Capsule, Extended releaseOral	Sun Pharmaceutical Industries, Inc.	63304-720
Diltiazem hydrochloride	Diltiazem hydrochloride 120 mg/1	Capsule, Extended releaseOral	Sun Pharmaceutical Industries, Inc.	63304-718
Diltiazem hydrochloride	Diltiazem hydrochloride 180 mg/1	Capsule, Extended releaseOral	Sun Pharmaceutical Industries, Inc.	63304-719
Diltiazem hydrochloride	Diltiazem hydrochloride 360 mg/1	Capsule, Extended releaseOral	Sun Pharmaceutical Industries, Inc.	63304-722
Diltiazem hydrochloride	Diltiazem hydrochloride 120 mg/1	Capsule, Extended releaseOral	A-S Medication Solutions	50090-6328