No. J8670 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 is one billing unit of J8670?

One unit of J8670 is 1 mg, as stated in the code's descriptor. Units to report = dose given ÷ 1 mg.

J8670 J-Code: Rolapitant — Billing Units & NDCs

In short

J8670 is the HCPCS Level II code for rolapitant, oral, 1 mg. One billing unit is 1 mg.

Code

CMS HCPCS file

HCPCS codeJ8670

Billing unit1 mg

Descriptor: Rolapitant, oral, 1 mg
Short descriptor: Rolapitant, oral, 1mg
Code set: HCPCS Level II, maintained by CMS
Effective: Jan 1, 2017

The billing unit is read from the descriptor. Confirm it against the CMS file before billing.

Medicare Part B payment limit

CMS ASP file

Not payable under Part B this quarter. CMS lists J8670 among drugs whose manufacturer (TerSera Therapeutics LLC) has no Medicaid drug rebate agreement in effect.

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 ÷ 1 mg. For example, 100 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 = 1 mg)

Modifier

NDC (11-digit)

NDC unit qualifier

NDC quantity

Enter the dose given to build the claim line.

Find the NDC

Med-Code hasn’t mapped J8670 to specific products yet. Search the FDA NDC Directory for the drug named in the descriptor, and check the route and strength match the code.

Search NDCs for Rolapitant

J8670: common questions

Is J8670 a CPT code?: No. J8670 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 is one billing unit of J8670?: One unit of J8670 is 1 mg, as stated in the code's descriptor. Units to report = dose given ÷ 1 mg. J-code billing units.

J8670 — Rolapitant, oral, 1 mg