No. J9299 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code.

What NDCs are billed under J9299?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 4 NDCs under J9299, for Opdivo. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J9299?

$34.191 per 1 mg, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.

What is one billing unit of J9299?

One unit of J9299 is 1 mg, as stated in the code's descriptor. Units to report = dose given ÷ 1 mg.

J9299 J-Code: Opdivo (nivolumab) — Billing Units

In short

J9299 is the HCPCS Level II code for injection, nivolumab, 1 mg. CMS assigns NDCs for Opdivo to it. One billing unit is 1 mg. The Medicare Part B payment limit is $34.191 per unit (October 1, 2026 through December 31, 2026).

Code

Med-Code curated

HCPCS codeJ9299

Billing unit1 mg

Descriptor: Injection, nivolumab, 1 mg
Code set: HCPCS Level II, maintained by CMS
Category: Chemotherapy / Immunotherapy

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$34.191

Per1 mg

Coinsurance20%

Effective October 1, 2026 through December 31, 2026. Payment allowance limits subject to the ASP methodology are based on 2Q26 ASP data. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files

Units and claim line

Units = dose given ÷ 1 mg. For example, 100 mg is 100 units. Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.

Dose given (mg)

HCPCS units (1 unit = 1 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

Drugs mapped to J9299

FDA-listed products billed under J9299

Finished products in the FDA NDC Directory whose brand or single active ingredient, and route, match this code’s entry.

NDC products matching J9299
Product	Strength	Form · route	Labeler	Product NDC
Opdivonivolumab	Nivolumab 10 mg/mL	InjectionIntravenous	E.R. Squibb & Sons, L.L.C.	0003-3772
Opdivonivolumab	Nivolumab 10 mg/mL	InjectionIntravenous	E.R. Squibb & Sons, L.L.C.	0003-3734
Opdivonivolumab	Nivolumab 10 mg/mL	InjectionIntravenous	E.R. Squibb & Sons, L.L.C.	0003-3774
Opdivonivolumab	Nivolumab 10 mg/mL	InjectionIntravenous	E.R. Squibb & Sons, L.L.C.	0003-3756

All NDCs for these drugs

NDCs billed under J9299

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 4 NDCs to J9299 for Opdivo. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J9299 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Opdivo	00003-3734-13	E.R. Squibb & Sons, L.L.C.	24	240
Opdivo	00003-3756-14	E.R. Squibb & Sons, L.L.C.	12	120
Opdivo	00003-3772-11	E.R. Squibb & Sons, L.L.C.	4	40
Opdivo	00003-3774-12	E.R. Squibb & Sons, L.L.C.	10	100

J9299: common questions

Is J9299 a CPT code?: No. J9299 is a HCPCS Level II code, maintained by CMS, that identifies the drug supplied. CPT codes are five-digit numbers from the AMA that describe services. Giving the drug, for example an injection or infusion, is usually reported with a separate CPT administration code. CPT codes for drug administration.
What NDCs are billed under J9299?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 4 NDCs under J9299, for Opdivo. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J9299?: $34.191 per 1 mg, effective October 1, 2026 through December 31, 2026, from CMS's Part B drug payment limit file. Multiply by the units billed for the allowed amount before deductible and coinsurance. It is not a coverage decision.
What is one billing unit of J9299?: One unit of J9299 is 1 mg, as stated in the code's descriptor. Units to report = dose given ÷ 1 mg. J-code billing units.

J9299 — Injection, nivolumab, 1 mg