NDC codes

FDA NDC Directory
Product NDC (as listed)16571-806Labeler and product segments. Claims need a package NDC.
Product NDC at billing width16571-0806Add 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
16571-806-06165710806061 CARTON in 1 KIT (16571-806-06) / 1 BOTTLE, GLASS in 1 CARTON / 60 mL in 1 BOTTLE, GLASSMarketed from Jul 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)
Sirolimus
Generic name (nonproprietary)
sirolimus
Active ingredients
Sirolimus — 1 mg/mL
Dosage form
Solution
Route
Oral
Product type
Prescription drug
Marketing category
ANDA — Abbreviated New Drug Application (generic)Application ANDA 215116
Marketing start
Listing expires
Other FDA classes
Decreased Immunologic Activity (Physiologic effect)Protein Kinase Inhibitors (Mechanism)mTOR Inhibitors (Mechanism)
Identifiers
Product ID 16571-806_fff39157-a122-4e42-90f3-42d21ca85532SPL ID fff39157-a122-4e42-90f3-42d21ca85532SPL set ID 400da0a5-2a85-44ab-a2c5-bb9161750db3RxCUI 314230UNII W36ZG6FT64
Pharmacologic class
Kinase Inhibitor; mTOR Inhibitor Immunosuppressant

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

N416571080606 followed by a unit qualifier and the quantity

Package 16571-0806-06. 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)

Sirolimus is an mTOR inhibitor immunosuppressant indicated for the prophylaxis of organ rejection in patients aged ≥13 years receiving renal transplants: Patients at low- to moderate-immunologic risk: Use initially with cyclosporine (CsA) and corticosteroids. CsA withdrawal is recommended 2–4 months after transplantation ( 1.1 ). Patients at high-immunologic risk: Use in combination with CsA and corticosteroids for the first 12 months following transplantation ( 1.1 ). Safety and efficacy of CsA withdrawal has not been established in high risk patients ( 1.1 , 1.2 , 14.3 ). Sirolimus is an mTOR inhibitor indicated for the treatment of patients with lymphangioleiomyomatosis ( 1.3 ). 1.1 Proph…

Excerpt only. Read the full label for complete information.

Full label on DailyMed (opens in a new tab)

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