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J0485

J0485 – Injection, belatacept, 1 mg · NDC Crosswalk & Billing Units

HCPCS Level II J-code · Medicare Part B drug billing
J-code ● 1 NDC crosswalked per 1 MG $3.885/unit ASP+6%

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Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

📋 J0485 summary

J0485 is a HCPCS Level II J-code used to bill belatacept, 1 mg, billed per 1 MG. The number of billing units to report depends on the dose administered and the NDC/package billed — use the calculator below.

Brand names associated with J0485: Nulojix

Code J0485 Billing unit 1 MG Payment limit $3.885/unit NDC-Crosswalk 1 Quarter Q3 2026 RxCUI Atlas Trace the drug concept →

⚠ An NDC↔HCPCS crosswalk and a published payment limit do not guarantee payer coverage or payment. Always verify the current payer policy and claim format before billing.

🗂️ Key billing facts

HCPCS codeJ0485
DescriptorInjection, belatacept, 1 mg
Billing unit1 MG
Payment limit / unit$3.885
Est. ASP / unit$3.665 est.
Mapped NDCs1
Data periodQ3 2026
Last updated2026-08-20

💊 About Belatacept Injection DRUG GUIDE

Nulojix (belatacept) is used to prevent the body from rejecting a transplanted kidney in adult patients.

It is always used as part of a combination regimen — not on its own.Nulojix is approved only for kidney transplant recipients who have tested positive for prior Epstein-Barr virus (EBV) exposure.

It is not recommended for liver transplant patients, and its use has not been established for other transplanted organs.

Read the full Belatacept Injection drug guide →
Clinical overview from our editorial drug guide for Belatacept Injection. For billing reference, see the sections above.

🧾 Billing & reimbursement HCPCS · CMS · EFF. Q3 2026

📅 Payment limits effective Q3 2026 — from the CMS Medicare Part B Payment Limit File (revised quarterly).
Medicare payment limit / unit
$3.885
Est. ASP / unit
$3.665 est.
Est. after 2% sequester
$3.807
HCPCS dosage
1 MG
The CMS payment limit is the Medicare Part B drug allowance (ASP + 6%, statutory). After the 2% federal sequester the effective payment is ≈ ASP + 4.3%; estimated ASP = payment limit ÷ 1.06. Source: CMS Medicare Part B Payment Limit File (quarterly), Q3 2026.
Full HCPCS code details (official CMS record)
Long descriptionInjection, belatacept, 1 mg
CoverageC — Carrier/MAC judgment
Pricing indicator51 — Drug — priced under the ASP methodology
Type of service1 — Medical care
BETOS-2O1E
ASC payment groupYY
Action codeN — No maintenance this year
Effective date2013-01-01
Date added2013-01-01
Source: CMS HCPCS Level II code file (imported via admin).

🧮 Dosing & billing-units calculator HCPCS UNITS

One billing unit of J0485 = 1 mg. Enter a regimen to convert dose → billing units and project a full course.
Billing units = dose ÷ HCPCS unit size. Most payers require whole units — round per the payer's policy. “Est. Medicare pay” uses the current payment limit. For single-dose vials, drug discarded after administration may be separately billable with modifier JW (JZ when none is discarded) where allowed. Always verify payer-specific rounding before billing.

🔁 NDCs that bill under J0485 WITH EST. MEDICARE PAY

1 NDC map to J0485. Bill units = how many HCPCS units one package represents. Est. pay / pkg = payment limit ($3.885/unit) × that package's bill units.
NDC (11-digit)DrugLabelerPackageStrength Bill units Est. pay / pkg NADAC / unit StatusSource
00003-0371-13 NULOJIX BELATACEPT 250 mg/1 INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION E.R. 1 VIAL, SINGLE-USE in 1 CARTON (0003-0371-... 250 mg/1 250 $971.25 — ● Active CMS + PDAC
NDC→HCPCS mappings come from the CMS ASP NDC-HCPCS crosswalk; additional DME MAC / DMEPOS mappings come from PDAC and are labeled separately. NADAC from CMS (weekly). “Status” reflects the product's marketing / obsolete flag in the NDC directory. Presence or absence here does not determine Medicare coverage. Linked NDCs open the full product page.

📊 Medicare utilization & spend CMS · PART B · 2026 (Q1)

Period
Total Part B spend
$34.95M
Claims
17,290
Beneficiaries
6,411
Spend / beneficiary
$5,451.92
Spend / claim
$2,021.53
Trend by period
Where J0485 ranks among Part B drugs · 2026 (Q1) · neighbors ±5
Total spending — #86 of 824
#81 UDENYCA AUTOINJECTOR... Q5111 $39.49M #82 PHESGO J9316 $38.43M #83 IDOSE TR J7355 $38.31M #84 TYVASO INSTITUTIONAL... J7686 $36.52M #85 CAPVAXIVE 90684 $36.18M #86 NULOJIX J0485 $34.95M #87 TYSABRI J2323 $34.71M #88 BREYANZI Q2054 $34.18M #89 RYBREVANT J9061 $33.53M #90 CYRAMZA J9308 $33.32M #91 KADCYLA J9354 $32.97M
Total claims — #124 of 824
#119 ENHERTU J9358 18,044 #120 CARBOPLATIN* J9045 18,010 #121 OCTREOTIDE ACETATE E... J2353 17,897 #122 LANREOTIDE ACETATE(J... J1930 17,811 #123 GEMCITABINE HCL(J920... J9201 17,649 #124 NULOJIX J0485 17,290 #125 AMELUZ J7345 16,994 #126 ADACEL TDAP* 90715 16,971 #127 PADCEV J9177 16,557 #128 GELSYN-3 J7328 16,416 #129 GEL-ONE J7326 16,189

Full breakdown by period (2)
PeriodTotal spendBeneficiariesClaims$/beneficiary$/claim
2026 (Q1) $34.95M 6,411 17,290 $5,451.92 $2,021.53
2025 (Q1-Q4) $138.26M 7,619 67,863 $18,146.53 $2,037.32
Provider-administered (Part B) spend, calculated for the whole HCPCS code (CMS does not publish Medicare spend per individual NDC). Self-administered use is covered under Part D instead. A blank patient count means fewer than 11 people — CMS hides counts that small to protect privacy. Source: CMS Medicare Quarterly Part B Spending by Drug (data.cms.gov), updated quarterly.

📈 Medicare Part B claims detail CMS PSPS · 2024

Calendar-year 2024 Medicare Part B fee-for-service activity for this HCPCS code, summed across all carriers, localities and specialties (CMS Physician/Supplier Procedure Summary). A “service” is one billed line/unit — not one claim — so counts run higher than claim counts.
Allowed charges
$23.2M
Medicare paid
$17.77M
Submitted services
6,618,540
Denial rate
9.5%
Allowed / service
$3.87
Submitted charges
$72.53M
Source: CMS Physician/Supplier Procedure Summary (PSPS), CY2024 — Medicare Part B carrier + DME fee-for-service claims (excludes Medicare Advantage). Figures are for the whole HCPCS code, which may cover uses beyond this drug. ⚠ CMS hides any figure covering fewer than 11 patients (a privacy rule), so totals — especially denials and low-volume codes — run a little low.

🗺️ Where J0485 is utilized CMS · BY PROVIDER · 2024

Medicare Part B services for this code by the rendering provider's state — 1,159,570 services across 11 states & territories in 2024 (CMS reports include DC and U.S. territories). Switch to per 100k to compare states fairly regardless of population. Hover or tap a state for its top ZIP codes.
Hover or tap a state to see its numbers + top ZIP codes.
Per-capita = services ÷ 2023 state population × 100,000 (so high-population states aren't automatically "hotter"). Counts reflect the provider's location, not the patient's. Providers with fewer than 11 patients are hidden by CMS for privacy, so totals run low and per-100k can be noisy in small states — read this as relative geography, not exact counts. Source: CMS Medicare Physician & Other Practitioners — by Provider and Service, 2024.

📊 What bills under J0485

J-codes are billing codes often used for drugs billed under the medical benefit. This connects the billing code to the NDC package records it covers, by ingredient and labeler.

NDC products by ingredient
BELATACEPT 1
NDC products by labeler
E.R. Squibb & Sons, L.L.C. 1

🗃️ Data sources & freshness

Every figure on this page is computed from public datasets. Here's what each section draws on and how current it is.
HCPCS code & descriptor
CMS HCPCS Level II code file
Loaded
Payment limit & billing unit
CMS Medicare Part B ASP Pricing File (quarterly)
Q3 2026 · as of 2026-08-20
NDC ↔ HCPCS crosswalk
CMS ASP NDC-HCPCS crosswalk + DMEPDAC (PDAC)
1 NDC mapped
NADAC acquisition cost
CMS National Average Drug Acquisition Cost (weekly)
Not available for mapped NDCs
Utilization & spend
CMS Part B Spending by Drug · PSPS · Physician & Other Practitioners
Latest data year 2026
Figures are estimates for reference and may lag the source files. Always verify against the current CMS files and your payer's policy before submitting claims.

⚠️ Practical billing caveats

  • A crosswalk is not coverage. An NDC mapping or a published payment limit does not guarantee a payer will cover or pay this code. Check the specific plan's policy.
  • Units ≠ milligrams. Bill the number of HCPCS units (dose ÷ the code's unit size), not the milligram dose. Use the calculator above.
  • Discarded drug. For single-dose vials, drug discarded after administration may be separately billable with modifier JW (and JZ when nothing is discarded) where the payer allows.
  • Rounding & partial units. Many payers require whole units; round per the payer's policy, not automatically up.
  • The code can cover more than this drug. Some HCPCS codes span multiple products or strengths — confirm the exact code for the product administered.
  • Figures lag. ASP limits change quarterly and utilization data are released with a delay. Verify against the current CMS files before billing.

❓ J0485 billing FAQ

What is HCPCS code J0485?
J0485 is a HCPCS Level II J-code used to bill Injection, belatacept, 1 mg under Medicare Part B and most medical (not pharmacy) benefits.
What is the billing unit for J0485?
One unit of J0485 represents 1 MG. Report the number of units equal to the dose administered divided by 1 MG.
How many units of J0485 should I bill?
Divide the dose administered by the code's unit size (1 MG) to get the number of billing units, then round per your payer's policy. The calculator on this page converts a dose into billing units and projects a full course.
How much does Medicare pay for J0485?
The Medicare Part B payment limit is $3.885 per unit (Q3 2026), based on ASP + 6%. After the 2% sequester the effective payment is about $3.807 per unit. Payment limits are revised quarterly.
Which NDCs bill under J0485?
1 NDC currently map to J0485 in the CMS ASP NDC-HCPCS crosswalk. See the NDC crosswalk table above for each product, package, billing units and estimated reimbursement.
Does a crosswalk mean J0485 is covered?
No. An NDC-to-HCPCS crosswalk and a published payment limit do not guarantee coverage or payment. Coverage depends on the payer, the diagnosis and the site of care — always verify the current policy before billing.
For professional billing reference only — verify against the current CMS files before submitting claims.