No. J9173 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 J9173?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 2 NDCs under J9173, for Imfinzi. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J9173?

$87.658 per 10 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 J9173?

One unit of J9173 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg.

J9173 J-Code: Imfinzi (durvalumab) — Billing Units

In short

J9173 is the HCPCS Level II code for injection, durvalumab, 10 mg. CMS assigns NDCs for Imfinzi to it. One billing unit is 10 mg. The Medicare Part B payment limit is $87.658 per unit (October 1, 2026 through December 31, 2026).

Code

Med-Code curated

HCPCS codeJ9173

Billing unit10 mg

Descriptor: Injection, durvalumab, 10 mg
Code set: HCPCS Level II, maintained by CMS
Category: Chemotherapy / PD-L1 Biologic

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$87.658

Per10 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 ÷ 10 mg. For example, 1000 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 = 10 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

Drugs mapped to J9173

FDA-listed products billed under J9173

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

NDC products matching J9173
Product	Strength	Form · route	Labeler	Product NDC
Imfinzidurvalumab	Durvalumab 120 mg/2.4mL	Injection, SolutionIntravenous	AstraZeneca Pharmaceuticals LP	0310-4500
Imfinzidurvalumab	Durvalumab 500 mg/10mL	Injection, SolutionIntravenous	AstraZeneca Pharmaceuticals LP	0310-4611

All NDCs for these drugs

NDCs billed under J9173

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 2 NDCs to J9173 for Imfinzi. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J9173 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Imfinzi	00310-4500-12	AstraZeneca Pharmaceuticals LP	2.4	12
Imfinzi	00310-4611-50	AstraZeneca Pharmaceuticals LP	10	50

J9173: common questions

Is J9173 a CPT code?: No. J9173 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 J9173?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 2 NDCs under J9173, for Imfinzi. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J9173?: $87.658 per 10 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 J9173?: One unit of J9173 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg. J-code billing units.

J9173 — Injection, durvalumab, 10 mg