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HCPCS code J9350: Mosunetuzumab injection, per 1 mg2026 Medicare rate & RVUs

Mosunetuzumab-axgb is an intravenous bispecific antibody used for certain adults with relapsed or refractory follicular lymphoma after prior systemic treatment.

CMS RVU26DEffective Oct 1, 2026109 payment localities

Medicare rate · J9350

Mosunetuzumab injection, per 1 mg

Office or facility?

Work RVUs
0
Total RVUs
0.00
Global days
XXX

National rate · 2026

—

Not priced in the facility setting.

See every locality for J9350 →Billed by an NP, PA or therapist? →

Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.

Your location

Medicare pays by the payment locality where the service is performed.

On this page 10 sections
  1. Medicare rate
  2. What J9350 covers
  3. By payment locality
  4. Rate map
  5. How it’s calculated
  6. Payment rules
  7. Similar codes
  8. Related codes
  9. Billing questions
  10. Sources

What J9350 covers

Mosunetuzumab-axgb is an intravenous bispecific antibody that links CD20-positive B cells with CD3-positive T cells. It is used for adults with relapsed or refractory follicular lymphoma after at least two prior systemic therapies. Oncology clinicians administer it by infusion, using step-up dosing and monitoring for reactions such as cytokine release syndrome and neurologic toxicity.

J9350 identifies the drug quantity, not the infusion service. Each billing unit represents 1 mg of mosunetuzumab-axgb, so units are based on the administered dose. CMS assigns physician fee schedule status E, excluding the code from that schedule; when Medicare covers the drug, payment is under another method. CMS classifies it as a Part B drug, generally priced from quarterly Average Sales Price files when covered. The Medicare contractor determines coverage.

This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.

Where J9350 pays more and less

The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.

109 of 109 payment localities

J9350 office and facility rates by payment locality
Payment localityOfficeFacility
AlabamaUnavailableUnavailable
AlaskaUnavailableUnavailable
ArizonaUnavailableUnavailable
ArkansasUnavailableUnavailable
Atlanta, GAUnavailableUnavailable
Austin, TXUnavailableUnavailable
Bakersfield, CAUnavailableUnavailable
Baltimore area, MDUnavailableUnavailable
Beaumont, TXUnavailableUnavailable
Brazoria, TXUnavailableUnavailable

J9350 rates by state

Office rate range in each state. Select a state to see its payment localities.

MEWIVTNHMTNDMNMINYMARIWAIDWYSDIAILINOHPANJCTORNVUTCONEMOKYWVVAMDDECAAZNMKSOKARTNNCSCDCTXLAMSALGAFLAKHI

Explore a state

Local rates. Clear comparisons.

Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.

View every state and territory as a table
J9350 office rate range by state
State / territoryOffice rate rangeLocalities
AKNo published base rate1
ALNo published base rate1
ARNo published base rate1
AZNo published base rate1
CANo published base rate29
CONo published base rate1
CTNo published base rate1
DCNo published base rate1
DENo published base rate1
FLNo published base rate3
GANo published base rate2
GUNo published base rate1
HINo published base rate1
IANo published base rate1
IDNo published base rate1
ILNo published base rate4
INNo published base rate1
KSNo published base rate1
KYNo published base rate1
LANo published base rate2
MANo published base rate2
MDNo published base rate3
MENo published base rate2
MINo published base rate2
MNNo published base rate1
MONo published base rate3
MSNo published base rate1
MTNo published base rate1
NCNo published base rate1
NDNo published base rate1
NENo published base rate1
NHNo published base rate1
NJNo published base rate2
NMNo published base rate1
NVNo published base rate1
NYNo published base rate5
OHNo published base rate1
OKNo published base rate1
ORNo published base rate2
PANo published base rate2
PRNo published base rate1
RINo published base rate1
SCNo published base rate1
SDNo published base rate1
TNNo published base rate1
TXNo published base rate8
UTNo published base rate1
VANo published base rate2
VINo published base rate1
VTNo published base rate1
WANo published base rate2
WINo published base rate1
WVNo published base rate1
WYNo published base rate1

How the J9350 rate is calculated

Each of J9350’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.

How the rate is built · J9350

RVUs × geographic indexes × conversion factor

Office or facility?

Work0.00

0.00 RVUs× 1.000 GPCI

Practice expense0.00

0.00 RVUs× 1.000 GPCI

Malpractice0.00

0.00 RVUs× 1.000 GPCI

Adjusted RVUs

0.0000

Conversion factor

$33.4009

Medicare rate

$0.00

Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.

Payment rules and modifiers for J9350

J9350 has no global surgery period, no multiple-procedure, bilateral or assistant-at-surgery adjustment, and no professional/technical split. What changes the payment is where the service happens: the place of service on the claim decides whether Medicare pays the office or the facility rate.

Place of service · J9350

Which rate does Medicare pay?

The POS code on the claim line (CMS-1500 box 24B).

POS 11 · non-facility rate · national

—

J9350 isn’t priced in this setting.

J9350 compared with similar codes

Compare codes · National

4 codes, side by side

Office or facility?

  • J9350

    Mosunetuzumab injection, per 1 mg0 wRVU

    Not priced

  • J9312

    Rituximab injection, per 10 mg0 wRVU

    Not priced

  • J9301

    Obinutuzumab, per 10 mg0 wRVU

    Not priced

  • J9311

    Rituximab-hyaluronidase, per 10 mg0 wRVU

    Not priced

How to choose

J9312Rituximab injectionPer 10 mg
J9312 identifies rituximab, not mosunetuzumab-axgb. Choose based on the drug administered; their billing units represent different quantities.
J9301ObinutuzumabPer 10 mg
J9301 identifies obinutuzumab, a different anti-CD20 drug. It is not the code for mosunetuzumab-axgb.
J9311Rituximab-hyaluronidasePer 10 mg
J9311 identifies a subcutaneous rituximab-hyaluronidase product. J9350 is for intravenous mosunetuzumab-axgb.

Codes related to J9350

Related codes aren’t interchangeable: bill the code that matches the service performed.

Codes related to J9350
CodeHow it relatesNational office range
Used instead
J9312Rituximab injection, per 10 mgRituximab is another anti-CD20 drug used in some B-cell lymphoma treatment regimens.No office rate
J9301Obinutuzumab, per 10 mgObinutuzumab is another anti-CD20 drug used in some follicular lymphoma regimens.No office rate
J9311Rituximab-hyaluronidase, per 10 mgSubcutaneous rituximab and hyaluronidase may be selected for some lymphoma treatment plans.No office rate

J9350 billing questions

How many units should be reported?

Each J9350 unit represents 1 mg of mosunetuzumab-axgb. Calculate units from the amount administered.

How is J9350 different from J9312?

J9350 represents mosunetuzumab-axgb; J9312 represents rituximab. Select the code for the drug actually administered.

Does J9350 include the infusion service?

No. J9350 identifies the drug quantity; report the infusion service separately using the appropriate administration code.

How does Medicare treat this code?

CMS assigns status E, excluding J9350 from the physician fee schedule. When covered, it is treated as a Part B drug and generally priced from quarterly ASP files.

Does J9350 establish Medicare coverage?

No. Coverage is determined by the Medicare contractor.

Where these rates come from

FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.

CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027

Open CMS sourceHow we calculate rates

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