NDC codes

FDA NDC Directory
Product NDC (as listed)49973-011Labeler and product segments. Claims need a package NDC.
Product NDC at billing width49973-0011Add 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
49973-011-1849973001118499730011181 BLISTER PACK in 1 BOX (49973-011-18) / 18 TABLET in 1 BLISTER PACKMarketed from Apr 23, 2018
49973-011-2449973001124499730011241 BLISTER PACK in 1 BOX (49973-011-24) / 24 TABLET in 1 BLISTER PACKMarketed from Mar 1, 2016
49973-011-4849973001148499730011482 BLISTER PACK in 1 BOX (49973-011-48) / 24 TABLET in 1 BLISTER PACKMarketed from Dec 15, 2025

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)
Azo Urinary Tract Defense Antibacterial ProtectionSuffix: Antibacterial Protection
Generic name (nonproprietary)
methenamine, sodium salicylate
Active ingredients
Methenamine — 162 mg/1Sodium salicylate — 162.5 mg/1
Dosage form
Tablet
Route
Oral
Labeler
i-Health, Inc.NDC labeler code 49973
Product type
Over-the-counter drug
Marketing category
Unapproved drug (other)
Marketing start
Listing expires
Identifiers
Product ID 49973-011_4472aec7-dd1f-0230-e063-6394a90abe72SPL ID 4472aec7-dd1f-0230-e063-6394a90abe72SPL set ID ba13a608-e4c5-4465-8be8-be0fd1fd46aeRxCUI 1489932, 1721434UNII J50OIX95QV, WIQ1H85SYP

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

N449973001118 followed by a unit qualifier and the quantity

Package 49973-0011-18. 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)

Uses Temporarily relieves: pain & burning frequency and urgency of urination

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

About NDC 49973-011

What is NDC 49973-011?
49973-011 is the product NDC for Azo Urinary Tract Defense Antibacterial Protection, Methenamine 162 mg/1; Sodium salicylate 162.5 mg/1 tablet, listed with the FDA by i-Health, Inc.. It has 3 package NDCs, shown above in 10- and 11-digit form.
What drug is associated with this NDC?
Azo Urinary Tract Defense Antibacterial Protection (Methenamine, Sodium salicylate).
What is the active ingredient?
Methenamine, Sodium salicylate.
Who is the labeler?
i-Health, Inc., NDC labeler code 49973. The labeler is the company responsible for the label; it may be the manufacturer, a repackager or a distributor.
What other NDCs exist for Azo Urinary Tract Defense Antibacterial Protection?
None: this is the only finished product listed under this name.
Is there a related HCPCS / J-code?
Not in Med-Code's curated HCPCS directory. See Billing references above.

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