HCPCS drug code for belimumab given by IV infusion in a clinic setting, billed per 10 mg, mainly for systemic lupus.

3 sources ↓

Medicare: $0.00
Work RVU: 0
Global, days
Region: General

Drawn from CMS

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 3 cited references ↓

Lupus diagnosis and current disease activity
Weight-based dose calculation and units billed
Infusion times for the administration code
NDC, lot number, and discarded amount if any
Concurrent steroid dose for surgical planning
Last infusion date in the pre-op note

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

JW Modifier JZ Modifier

What this code covers

Source · Editorial summary grounded in 3 cited references ↓

J0490 reports belimumab (Benlysta) per 10 mg for IV infusion. It is a lupus drug, and the subcutaneous autoinjector is handled through pharmacy benefits, not J0490.

Orthopedic practices do not usually bill it, but lupus patients show up in ortho clinics with avascular necrosis of the hip from years of steroids, tendon problems, and fragility fractures. When one of them is scheduled for a hip replacement or core decompression, the surgeon needs to know about the biologic and the steroid dose. Lupus patients are often on both.

If an infusion center in your group bills it, payment comes from the ASP file rather than the physician fee schedule. Divide the dose in mg by 10 for units. The infusion administration is a separate line. Add JW for any discarded amount from a single-dose vial, or JZ when nothing was wasted. Prior authorization is standard with commercial plans.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	0
Practice expense RVU	0
Malpractice RVU	0
Total RVU	0
Medicare national rate	$0.00
Global period	days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

Setting	Medicare rate (national)
Office (PFS non-facility) Procedure performed in physician's office	$0.00
HOPD (APC 1353) Hospital outpatient department	$57.16

Common denial reasons

The recurring reasons claims for CPT J0490 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

Prior authorization missing or expired
Units billed do not match mg given
No JW or JZ modifier on a single-dose vial
Diagnosis code does not support the indication
Subcutaneous product billed as J0490

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 3 cited references ↓

01What is J0490?

The HCPCS code for belimumab (Benlysta) given by IV infusion, billed per 10 mg.

02How do you calculate units for J0490?

Divide the total mg infused by 10. A 600 mg dose is 60 units.

03Why does an ortho surgeon need to know about Benlysta?

Lupus patients on biologics and steroids have higher infection and wound risk, and surgery timing is usually planned around the dosing schedule.

Sources & references

Editorial content was developed using the following public sources.

01CMS Physician Fee Schedule 2026
02CMS Medicare Part B Drug Average Sales Price files
03
cms.gov
https://www.cms.gov/medicare/payment/fee-schedules/physician

Mira Scribe

Mira Scribe notes capture lupus medications, steroid dose, and last infusion date at the surgical consult, so the pre-op plan reflects the patient's real drug picture.

See how Mira captures CPT J0490 documentation