In short

Novolog Penfill is billed under HCPCS J1817 — Insulin for administration through dme (i.e., insulin pump) per 50 units. One billing unit is 50 units. CMS's crosswalk lists 1 Novolog Penfill NDC under this code.

J1817 code details

Reference

J1817
Insulin for administration through dme (i.e., insulin pump) per 50 unitsBilling unit: 50 units
Labelers
Novo Nordisk, Inc

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$3.116
Per50 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

Novolog Penfill units and claim line

Enter the dose given to get the J1817 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Novolog Penfill NDCs and billing units

From CMS’s ASP NDC–HCPCS crosswalk, effective October 1, 2026 through December 31, 2026. Billing units per package are CMS’s figures for the code’s unit.

Novolog Penfill NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
00169-3303-12J1817Novo Nordisk, Inc5 × 330

Novolog Penfill: common questions

What is the J-code for Novolog Penfill?
Novolog Penfill is billed under HCPCS J1817 — Insulin for administration through dme (i.e., insulin pump) per 50 units. One billing unit is 50 units. CMS's crosswalk lists 1 Novolog Penfill NDC under this code.
How many J1817 billing units are in a package of Novolog Penfill?
CMS lists 30 billing units per package, depending on the NDC, where one unit is 50 units. Units to report are based on the dose given, not the package.
Is J1817 a CPT code?
No. J1817 is a HCPCS Level II code from CMS for the drug itself. Giving it, for example by injection or infusion, is usually reported with a separate CPT administration code.

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