No. J1440 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 J1440?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 1 NDC under J1440, for Rebyota. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J1440?

$65.826 per 1 ml, 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 J1440?

One unit of J1440 is 1 ml, as stated in the code's descriptor. Units to report = dose given ÷ 1 ml.

J1440 J-Code: Rebyota (fecal microbiota) — Billing Units

In short

J1440 is the HCPCS Level II code for fecal microbiota, live - jslm, 1 ml. CMS assigns NDCs for Rebyota to it. One billing unit is 1 ml. The Medicare Part B payment limit is $65.826 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ1440

Billing unit1 ml

Descriptor: Fecal microbiota, live - jslm, 1 ml
Short descriptor: Fecal microbiota jslm 1 ml
Code set: HCPCS Level II, maintained by CMS
Effective: Jul 1, 2023

The billing unit is read from the descriptor. Confirm it against the CMS file before billing.

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$65.826

Per1 ml

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 J1440

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 1 NDC to J1440 for Rebyota. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J1440 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Rebyota	55566-9800-02	Ferring Pharmaceuticals Inc.	1	150

J1440: common questions

Is J1440 a CPT code?: No. J1440 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 J1440?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 1 NDC under J1440, for Rebyota. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J1440?: $65.826 per 1 ml, 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 J1440?: One unit of J1440 is 1 ml, as stated in the code's descriptor. Units to report = dose given ÷ 1 ml. J-code billing units.

J1440 — Fecal microbiota, live - jslm, 1 ml