No. J2800 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 J2800?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 13 NDCs under J2800, for Methocarbamol and Robaxin. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J2800?

$3.839 per 10 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.

J2800 J-Code: Robaxin (methocarbamol) — Billing Units

In short

J2800 is the HCPCS Level II code for injection, methocarbamol, up to 10 ml. CMS assigns NDCs for Methocarbamol and Robaxin to it. The Medicare Part B payment limit is $3.839 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ2800

Billing unitSee descriptor

Descriptor: Injection, methocarbamol, up to 10 ml
Short descriptor: Methocarbamol 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$3.839

Per10 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 J2800

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 13 NDCs to J2800 for Methocarbamol and Robaxin. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J2800 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Methocarbamol	00404-9992-10	Henry Schein Inc.	10	1
Methocarbamol	25021-0675-10	Sagent Pharmaceuticals	25 × 10	25
Methocarbamol	25021-0689-10	Sagent Pharmaceuticals	25 × 10	25
Methocarbamol	43598-0839-36	Dr. Reddy's Laboratories Inc.	10 × 10	10
Methocarbamol	55150-0223-10	Eugia US LLC	25 × 10	25
Methocarbamol	63323-0778-10	FreseniUS Kabi USA, LLC	25 × 10	25
Methocarbamol	70069-0101-05	Somerset Pharma, LLC	5 × 10	5
Methocarbamol	70069-0101-25	Somerset Pharma, LLC	25 × 10	25
Methocarbamol	71288-0716-10	Meitheal Pharmaceuticals Inc.	25 × 10	25
Robaxin	00641-6103-10	Hikma Pharmaceuticals USA Inc.	10 × 10	10
Robaxin	00641-6103-25	Hikma Pharmaceuticals USA Inc.	25 × 10	25
Robaxin	00641-6217-10	Hikma Pharmaceuticals USA Inc.	10 × 10	10
Robaxin	00641-6217-25	Hikma Pharmaceuticals USA Inc.	25 × 10	25

J2800: common questions

Is J2800 a CPT code?: No. J2800 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 J2800?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 13 NDCs under J2800, for Methocarbamol and Robaxin. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J2800?: $3.839 per 10 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.

J2800 — Injection, methocarbamol, up to 10 ml