HCPCS drug code · CMS crosswalk
Emend J-Code / HCPCS Code
In short
CMS assigns Emend NDCs to 2 HCPCS codes: J1453 (per 1 mg), J8501 (per 5 mg). Which one applies depends on the product; the table lists each NDC with its code.
Reference
- J1453
- Injection, fosaprepitant, 1 mgBilling unit: 1 mg
- J8501
- Aprepitant, oral, 5 mgBilling unit: 5 mg
- Labelers
- Merck Sharp & Dohme LLC
Medicare Part B payment limit
CMS ASP fileEffective 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
Medicare Part B payment limit
CMS ASP fileEffective 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
Emend units and claim line
Enter the dose given to get the J1453 units and the NDC line for the CMS-1500 and the 837P. This builds the J1453 line; use the code page for J8501.
Enter the dose given to build the claim line.
Emend 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.
| NDC (11-digit) | HCPCS | Labeler | Package | Billing units per package |
|---|---|---|---|---|
| 00006-3061-00 | J1453 | Merck Sharp & Dohme LLC | 1 | 150 |
| 00006-0461-02 | J8501 | Merck Sharp & Dohme LLC | 2 × 1 | 32 |
| 00006-3066-03 | J8501 | Merck Sharp & Dohme LLC | 1 | 25 |
| 00006-3862-03 | J8501 | Merck Sharp & Dohme LLC | 3 × 1 | 57 |
Emend: common questions
- What is the J-code for Emend?
- CMS assigns Emend NDCs to 2 HCPCS codes: J1453 (per 1 mg), J8501 (per 5 mg). Which one applies depends on the product; the table lists each NDC with its code.
- How many J1453 billing units are in a package of Emend?
- CMS lists 150 billing units per package, depending on the NDC, where one unit is 1 mg. Units to report are based on the dose given, not the package.
- How many J8501 billing units are in a package of Emend?
- CMS lists 25 to 57 billing units per package, depending on the NDC, where one unit is 5 mg. Units to report are based on the dose given, not the package.
- Is J1453 a CPT code?
- No. J1453 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.