No. J3470 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 J3470?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 1 NDC under J3470, for Amphadase. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J3470?

$31.802 per 150 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.

J3470 J-Code: Amphadase (hyaluronidase) — Billing Units

In short

J3470 is the HCPCS Level II code for injection, hyaluronidase, up to 150 units. CMS assigns NDCs for Amphadase to it. The Medicare Part B payment limit is $31.802 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ3470

Billing unitSee descriptor

Descriptor: Injection, hyaluronidase, up to 150 units
Short descriptor: Hyaluronidase injection
Code set: HCPCS Level II, maintained by CMS
Effective: Jan 1, 1997

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$31.802

Per150 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 J3470

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 1 NDC to J3470 for Amphadase. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J3470 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Amphadase	00548-9090-10	Amphastar Pharmaceuticals, Inc.	10 × 1	10

J3470: common questions

Is J3470 a CPT code?: No. J3470 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 J3470?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 1 NDC under J3470, for Amphadase. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J3470?: $31.802 per 150 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.

J3470 — Injection, hyaluronidase, up to 150 units