J9311 — Injection, rituximab 10 mg and hyaluronidase
J9311 is a HCPCS Level II code for injection, rituximab 10 mg and hyaluronidase. 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 J9311 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.
- practitioner
- 160 units MAI 3 — Date of Service Edit: Clinical · Prescribing Information
- outpatient
- 160 units MAI 3 — Date of Service Edit: Clinical · Prescribing Information
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 J9311
- Long descriptor
- Injection, rituximab 10 mg and hyaluronidase
- Short descriptor
- Inj rituximab, hyaluronidase
- Added
- January 1, 2019
- 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 J9311
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If J9311 is not quite right, the correct code is very often within a few positions of it.
- J9303Injection, panitumumab, 10 mg
- J9304Injection, pemetrexed (pemfexy), 10 mg
- J9305Injection, pemetrexed, not otherwise specified, 10 mg
- J9306Injection, pertuzumab, 1 mg
- J9307Injection, pralatrexate, 1 mg
- J9308Injection, ramucirumab, 5 mg
- J9309Injection, polatuzumab vedotin-piiq, 1 mg
- J9310Injection, rituximab, 100 mgterminated
- J9312Injection, rituximab, 10 mg
- J9313Injection, moxetumomab pasudotox-tdfk, 0.01 mg
- J9314Injection, pemetrexed (teva), not therapeutically equivalent to j9305, 10 mg
- J9315Injection, romidepsin, 1 mgterminated
- J9316Injection, pertuzumab, trastuzumab, and hyaluronidase-zzxf, per 10 mg
- J9317Injection, sacituzumab govitecan-hziy, 2.5 mg
- J9318Injection, romidepsin, non-lyophilized, 0.1 mg
- J9319Injection, romidepsin, lyophilized, 0.1 mg
Questions about J9311
What is HCPCS code J9311?
J9311 is a HCPCS Level II code for injection, rituximab 10 mg and hyaluronidase. It sits in the Drugs Administered Other Than Oral Method section.
Does Medicare cover J9311?
The CMS HCPCS file marks J9311 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 J9311 paid under the physician fee schedule?
J9311 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).