J9999 — Not otherwise classified, antineoplastic drugs
J9999 is a HCPCS Level II code for not otherwise classified, antineoplastic drugs. It belongs to the Drugs Administered Other Than Oral Method section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusE
Excluded from the physician fee schedule by regulation. Payment, where it exists, comes from another fee schedule (drugs via ASP, supplies via DMEPOS, and so on).
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of J9999 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- DME supplier
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · Published Contractor Policy
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for J9999
- Long descriptor
- Not otherwise classified, antineoplastic drugs
- Short descriptor
- Chemotherapy drug
- Added
- January 1, 1986
- BETOS
- O1D
- Pricing indicator
- 51 — Other
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Drugs.
Codes adjacent to J9999
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If J9999 is not quite right, the correct code is very often within a few positions of it.
- J9382Injection, zenocutuzumab-zbco, 1 mg
- J9390Injection, vinorelbine tartrate, 10 mg
- J9393Injection, fulvestrant (teva), not therapeutically equivalent to j9395, 25 mg
- J9394Injection, fulvestrant (fresenius kabi) not therapeutically equivalent to j9395, 25 mg
- J9395Injection, fulvestrant, 25 mg
- J9400Injection, ziv-aflibercept, 1 mg
- J9600Injection, porfimer sodium, 75 mg
- J9601Injection, linvoseltamab-gcpt, 1 mg
- K0001Standard wheelchair
- K0002Standard hemi (low seat) wheelchair
- K0003Lightweight wheelchair
- K0004High strength, lightweight wheelchair
- K0005Ultralightweight wheelchair
- K0006Heavy duty wheelchair
- K0007Extra heavy duty wheelchair
- K0008Custom manual wheelchair/base
Questions about J9999
What is HCPCS code J9999?
J9999 is a HCPCS Level II code for not otherwise classified, antineoplastic drugs. It sits in the Drugs Administered Other Than Oral Method section.
Does Medicare cover J9999?
The CMS HCPCS file marks J9999 as "Special coverage instructions apply". There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
How is J9999 paid under the physician fee schedule?
J9999 carries PFS status code E. Excluded from the physician fee schedule by regulation. Payment, where it exists, comes from another fee schedule (drugs via ASP, supplies via DMEPOS, and so on).