No. J1805 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 J1805?

CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 27 NDCs under J1805, for Brevibloc, Brevibloc In Nacl and Esmolol HCl. The table on this page shows each one with its billing units per package.

What is the Medicare payment limit for J1805?

$0.246 per 10 mg, 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 J1805?

One unit of J1805 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg.

J1805 J-Code: Brevibloc, Brevibloc In Nacl

In short

J1805 is the HCPCS Level II code for injection, esmolol hydrochloride, 10 mg. CMS assigns NDCs for Brevibloc, Brevibloc In Nacl and Esmolol HCl to it. One billing unit is 10 mg. The Medicare Part B payment limit is $0.246 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file

HCPCS codeJ1805

Billing unit10 mg

Descriptor: Injection, esmolol hydrochloride, 10 mg
Short descriptor: Inj, esmolol hcl, 10mg
Code set: HCPCS Level II, maintained by CMS
Effective: Jan 1, 2024

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$0.246

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. A payment limit is not a coverage decision; the Medicare contractor decides coverage. CMS ASP pricing files

Units and claim line

Units = dose given ÷ 10 mg. For example, 1000 mg is 100 units. Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.

Dose given (mg)

HCPCS units (1 unit = 10 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

NDCs billed under J1805

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 27 NDCs to J1805 for Brevibloc, Brevibloc In Nacl and Esmolol HCl. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J1805 in the CMS ASP crosswalk
Drug	NDC (11-digit)	Labeler	Package	Billing units per package
Brevibloc	00404-9825-10	Henry Schein Inc.	10	10
Brevibloc	10019-0075-87	Baxter Healthcare Corporation	100	200
Brevibloc	10019-0115-01	Baxter Healthcare Corporation	25 × 10	250
Brevibloc	10019-0666-10	Baxter Healthcare Corporation	10 × 100	2,000
Brevibloc	10019-0668-10	Baxter Healthcare Corporation	10 × 100	2,000
Brevibloc	10019-0670-10	Baxter Healthcare Corporation	10 × 250	2,500
Brevibloc	10019-0672-10	Baxter Healthcare Corporation	10 × 250	2,500
Brevibloc In Nacl	10019-0055-61	Baxter Healthcare Corporation	250	250
Esmolol HCl	00404-9785-10	Henry Schein Inc.	10	10
Esmolol HCl	00404-9858-10	Henry Schein Inc.	10	10
Esmolol HCl	10019-0120-01	Baxter Healthcare Corporation	25 × 10	250
Esmolol HCl	25021-0308-84	Sagent Pharmaceuticals	10 × 250	2,500
Esmolol HCl	25021-0309-82	Sagent Pharmaceuticals	10 × 100	2,000
Esmolol HCl	25021-0314-10	Sagent Pharmaceuticals	10 × 10	100
Esmolol HCl	44567-0450-10	WG Critical Care, LLC	10 × 250	2,500
Esmolol HCl	44567-0451-10	WG Critical Care, LLC	10 × 100	2,000
Esmolol HCl	51662-1444-01	HF Acquisition Co. LLC, DBA HealthFirst	10	10
Esmolol HCl	51662-1444-03	HF Acquisition Co. LLC, DBA HealthFirst	25 × 10	250
Esmolol HCl	55150-0194-10	Eugia US LLC	25 × 10	250
Esmolol HCl	55150-0420-10	Eugia US LLC	10 × 250	2,500
Esmolol HCl	55150-0421-10	Eugia US LLC	10 × 100	2,000
Esmolol HCl	63323-0652-10	FreseniUS Kabi USA, LLC	25 × 10	250
Esmolol HCl	67457-0182-10	Mylan Institutional LLC	10 × 10	100
Esmolol HCl	67457-0657-25	Mylan Institutional LLC	10 × 250	2,500
Esmolol HCl	67457-0658-10	Mylan Institutional LLC	10 × 100	2,000
Esmolol HCl	70121-1716-07	Amneal Pharmaceuticals, LLC	10 × 250	2,500
Esmolol HCl	70121-1717-07	Amneal Pharmaceuticals, LLC	10 × 100	2,000

J1805: common questions

Is J1805 a CPT code?: No. J1805 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 J1805?: CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 27 NDCs under J1805, for Brevibloc, Brevibloc In Nacl and Esmolol HCl. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J1805?: $0.246 per 10 mg, 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 J1805?: One unit of J1805 is 10 mg, as stated in the code's descriptor. Units to report = dose given ÷ 10 mg. J-code billing units.

J1805 — Injection, esmolol hydrochloride, 10 mg