NDC codes

FDA NDC Directory
Product NDC (as listed)42192-331Labeler and product segments. Claims need a package NDC.
Product NDC at billing width42192-0331Add 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
42192-331-0142192033101100 TABLET in 1 BOTTLE (42192-331-01)Marketed from Feb 3, 2011
42192-331-10421920331101000 TABLET in 1 BOTTLE (42192-331-10)Marketed from Mar 3, 2025
42192-331-304219203313030 TABLET in 1 BOTTLE (42192-331-30)Marketed from Mar 3, 2025
42192-331-904219203319090 TABLET in 1 BOTTLE (42192-331-90)Marketed from Dec 1, 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)
NP Thyroid 90
Generic name (nonproprietary)
levothyroxine, liothyronine
Active ingredients
Levothyroxine — 57 ug/1Liothyronine — 13.5 ug/1
Dosage form
Tablet
Route
Oral
Product type
Prescription drug
Marketing category
Unapproved drug (other)
Marketing start
Listing expires
Other FDA classes
Thyroxine (Chemical structure)Triiodothyronine (Chemical structure)
Identifiers
Product ID 42192-331_49655b7a-d522-d5e1-e063-6394a90a3727SPL ID 49655b7a-d522-d5e1-e063-6394a90a3727SPL set ID a3ff93ad-86ed-4324-ae86-7e7ed3a49db8RxCUI 208545, 313387, 313391, 313393, 314267, 1724437, 1724439, 1724481, 1855086, 1923809UNII Q51BO43MG4, 06LU7C9H1VUPC 0342192329102, 0342192330108, 0342192327016, 0342192328013
Pharmacologic class
l-Thyroxine; l-Triiodothyronine

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

N442192033101 followed by a unit qualifier and the quantity

Package 42192-0331-01. 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 . This label includes a boxed warning.

Indications (excerpt from the label)

INDICATIONS AND USAGE NP Thyroid ® tablets (thyroid tablets, USP) are indicated: 1. As replacement or supplemental therapy in patients with hypothyroidism of any etiology, except transient hypothyroidism during the recovery phase of subacute thyroiditis. This category includes cretinism, myxedema, and ordinary hypothyroidism in patients of any age (children, adults, the elderly), or state (including pregnancy); primary hypothyroidism resulting from functional deficiency, primary atrophy, partial or total absence of thyroid gland, or the effects of surgery, radiation, or drugs, with or without the presence of goiter; and secondary (pituitary), or tertiary (hypothalamic) hypothyroidism (See WA…

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

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