How many J2790 billing units are in a package of Rhogam?

CMS lists 1 to 25 billing units per package, depending on the NDC, where one unit is 300 mcg (1500 IU). Units to report are based on the dose given, not the package.

No. J2790 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.

Rhogam J-Code J2790 — Billing Units & NDCs

In short

Rhogam is billed under HCPCS J2790 — Injection, rho d immune globulin, human, full dose, 300 micrograms (1500 i.u.). One billing unit is 300 mcg (1500 IU). CMS's crosswalk lists 3 Rhogam NDCs under this code.

J2790 code details

Reference

J2790: Injection, rho d immune globulin, human, full dose, 300 micrograms (1500 i.u.)Billing unit: 300 mcg (1500 IU)
Labelers: Kedrion Biopharma Inc

Medicare Part B payment limit

CMS ASP file

Payment limit per unit$82.081

Per300 mcg (1500 iu)

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

Rhogam units and claim line

Enter the dose given to get the J2790 units and the NDC line for the CMS-1500 and the 837P.

Dose given (mcg)

HCPCS units (1 unit = 300 mcg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

Rhogam 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.

Rhogam NDCs in the CMS ASP crosswalk
NDC (11-digit)	HCPCS	Labeler	Package	Billing units per package
00562-7805-01	J2790	Kedrion Biopharma Inc	1	1
00562-7805-05	J2790	Kedrion Biopharma Inc	5 × 1	5
00562-7805-25	J2790	Kedrion Biopharma Inc	25 × 1	25

Rhogam: common questions

What is the J-code for Rhogam?: Rhogam is billed under HCPCS J2790 — Injection, rho d immune globulin, human, full dose, 300 micrograms (1500 i.u.). One billing unit is 300 mcg (1500 IU). CMS's crosswalk lists 3 Rhogam NDCs under this code.
How many J2790 billing units are in a package of Rhogam?: CMS lists 1 to 25 billing units per package, depending on the NDC, where one unit is 300 mcg (1500 IU). Units to report are based on the dose given, not the package.
Is J2790 a CPT code?: No. J2790 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.

Rhogam J-Code / HCPCS Code