No. J7171 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 J7171?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 2 NDCs under J7171, for Adzynma. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J7171?

$36.378 per 10 units, 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.

J7171 J-Code: Adzynma (adamts13) — Billing Units & NDCs

In short

J7171 is the HCPCS Level II code for injection, adamts13, recombinant-krhn, 10 iu. CMS assigns NDCs for Adzynma to it. The Medicare Part B payment limit is $36.378 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ7171

Billing unitSee descriptor

Descriptor: Injection, adamts13, recombinant-krhn, 10 iu
Short descriptor: Inj, adzynma, 10 iu
Code set: HCPCS Level II, maintained by CMS
Effective: Jul 1, 2024

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$36.378

Per10 units

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

Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.

HCPCS units

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the units to build the claim line.

NDCs billed under J7171

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 2 NDCs to J7171 for Adzynma. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J7171 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Adzynma	64764-0140-05	Takeda Pharmaceuticals America, Inc.	1	1
Adzynma	64764-0145-05	Takeda Pharmaceuticals America, Inc.	1	1

J7171: common questions

Is J7171 a CPT code?: No. J7171 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 J7171?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 2 NDCs under J7171, for Adzynma. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J7171?: $36.378 per 10 units, 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.

J7171 — Injection, adamts13, recombinant-krhn, 10 iu