In short

Inflectra is billed under HCPCS Q5103 — Injection, infliximab-dyyb, biosimilar, (inflectra), 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 1 Inflectra NDC under this code.

Q5103 code details

Reference

Q5103
Injection, infliximab-dyyb, biosimilar, (inflectra), 10 mgBilling unit: 10 mg
Labelers
Pfizer Inc

Medicare Part B payment limit

CMS ASP file
Payment limit per unit$28.456
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. CMS note: 8% of reference add-on applied. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files

Inflectra units and claim line

Enter the dose given to get the Q5103 units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

Inflectra 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.

Inflectra NDCs in the CMS ASP crosswalk
NDC (11-digit)HCPCSLabelerPackageBilling units per package
00069-0809-01Q5103Pfizer Inc110

Inflectra: common questions

What is the HCPCS code for Inflectra?
Inflectra is billed under HCPCS Q5103 — Injection, infliximab-dyyb, biosimilar, (inflectra), 10 mg. One billing unit is 10 mg. CMS's crosswalk lists 1 Inflectra NDC under this code.
How many Q5103 billing units are in a package of Inflectra?
CMS lists 10 billing units per package, depending on the NDC, where one unit is 10 mg. Units to report are based on the dose given, not the package.
Is Q5103 a CPT code?
No. Q5103 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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