In short

J9045 is the HCPCS Level II code for injection, carboplatin, 50 mg. CMS assigns NDCs for Carboplatin to it. One billing unit is 50 mg. The Medicare Part B payment limit is $3.101 per unit (October 1, 2026 through December 31, 2026).

Code

CMS HCPCS file
HCPCS codeJ9045
Billing unit50 mg
Descriptor
Injection, carboplatin, 50 mg
Short descriptor
Carboplatin injection
Code set
HCPCS Level II, maintained by CMS
Effective
Jan 1, 2009

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$3.101
Per50 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 ÷ 50 mg. For example, 5000 mg is 100 units. Enter the dose to get the units and the NDC line for the CMS-1500 and the 837P.

Enter the dose given to build the claim line.

NDCs billed under J9045

CMS’s ASP NDC–HCPCS crosswalk (effective October 1, 2026 through December 31, 2026) assigns 27 NDCs to J9045 for Carboplatin. Billing units per package are CMS’s figures for this code’s unit.

NDCs assigned to J9045 in the CMS ASP crosswalk
DrugNDC (11-digit)LabelerPackageBilling units per package
Carboplatin00703-4239-01Teva Parenteral Medicines, Inc.6012
Carboplatin00703-4239-81Teva Parenteral Medicines, Inc.6012
Carboplatin00703-4244-01Teva Parenteral Medicines, Inc.51
Carboplatin00703-4244-81Teva Parenteral Medicines, Inc.51
Carboplatin00703-4246-01Teva Parenteral Medicines, Inc.153
Carboplatin00703-4246-81Teva Parenteral Medicines, Inc.153
Carboplatin00703-4248-01Teva Parenteral Medicines, Inc.459
Carboplatin00703-4248-81Teva Parenteral Medicines, Inc.459
Carboplatin16729-0295-12Accord Healthcare Inc6012
Carboplatin16729-0295-34Accord Healthcare Inc459
Carboplatin55150-0335-00Eugia US LLC459
Carboplatin55150-0335-01Eugia US LLC459
Carboplatin55150-0386-00Eugia US LLC6012
Carboplatin55150-0386-01Eugia US LLC6012
Carboplatin60505-6282-01Apotex Corp51
Carboplatin60505-6282-03Apotex Corp153
Carboplatin60505-6282-06Apotex Corp459
Carboplatin60505-6282-07Apotex Corp6012
Carboplatin61703-0150-05Pfizer Inc153
Carboplatin61703-0262-05Pfizer Inc459
Carboplatin61703-0339-18Pfizer Inc51
Carboplatin61703-0339-22Pfizer Inc153
Carboplatin61703-0339-50Pfizer Inc459
Carboplatin61703-0339-56Pfizer Inc4512
Carboplatin61703-0360-18Pfizer Inc51
Carboplatin61703-0600-05Pfizer Inc6012
Carboplatin63323-0172-60FreseniUS Kabi USA, LLC6012

J9045: common questions

Is J9045 a CPT code?
No. J9045 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 J9045?
CMS's ASP crosswalk for October 1, 2026 through December 31, 2026 lists 27 NDCs under J9045, for Carboplatin. The table on this page shows each one with its billing units per package.
What is the Medicare payment limit for J9045?
$3.101 per 50 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 J9045?
One unit of J9045 is 50 mg, as stated in the code's descriptor. Units to report = dose given ÷ 50 mg. J-code billing units.

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