HCPCS Code J9190: Injection, Fluorouracil, 500 mg

You would bill 2 units of J9190 for the 1,000 mg administered and 0.5 units of J9190 with the JW modifier for the 250 mg that was discarded. CMS guidance requires billing for both the administered and discarded amounts.

No. J9190 only covers the injected drug itself. Chemotherapy administration must be reported separately, often with codes such as 96409 (IV push) or 96413 (infusion, up to 1 hour).

No. Fluorouracil (5-FU) falls under Medicare Part B coverage when injected in an outpatient facility or physician’s office. This ensures patients receive access to essential chemotherapy drugs as part of a larger treatment group rather than under a pharmacy benefit plan.