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J0901

J0901 – Vadadustat oral 1mg for esrd · NDC Crosswalk & Billing Units

HCPCS Level II J-code · Medicare Part B drug billing
J-code ● 3 NDCs crosswalked per 1 MG $0.137/unit ASP+6%

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

📋 J0901 summary

J0901 is a HCPCS Level II J-code used to bill Vadadustat oral 1mg for esrd, 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 J0901: Vafseo

Code J0901 Billing unit 1 MG Payment limit $0.137/unit NDC-Crosswalk 3 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 codeJ0901
DescriptorVadadustat oral 1mg for esrd
Billing unit1 MG
Payment limit / unit$0.137
Est. ASP / unit$0.129 est.
Mapped NDCs3
Data periodQ3 2026
Last updated2026-08-20

🧾 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
$0.137
Est. ASP / unit
$0.129 est.
Est. after 2% sequester
$0.134
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.

🧮 Dosing & billing-units calculator HCPCS UNITS

One billing unit of J0901 = 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 J0901 WITH EST. MEDICARE PAY

3 NDCs map to J0901. Bill units = how many HCPCS units one package represents. Est. pay / pkg = payment limit ($0.137/unit) × that package's bill units.
NDC (11-digit)DrugLabelerPackageStrength Bill units Est. pay / pkg NADAC / unit StatusSource
59922-0641-60 VAFSEO Vadadustat 150 mg/1 TABLET, FILM COATED Akebia 1 BOTTLE in 1 CARTON (59922-641-60) / 60... 150 mg/1 9,000 $1,233.00 — ● Active CMS ASP
59922-0642-60 VAFSEO Vadadustat 300 mg/1 TABLET, FILM COATED Akebia 1 BOTTLE in 1 CARTON (59922-642-60) / 60... 300 mg/1 18,000 $2,466.00 — ● Active CMS ASP
59922-0643-60 VAFSEO Vadadustat 450 mg/1 TABLET, FILM COATED Akebia 1 BOTTLE in 1 CARTON (59922-643-60) / 60... 450 mg/1 27,000 $3,699.00 — ● Active CMS ASP
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 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
—
Medicare paid
$0.00
Submitted services
60
Denial rate
100.0%
Submitted charges
$1.3K
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.

🗃️ 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
Not available in current dataset
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
3 NDCs 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
No reportable utilization
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.

❓ J0901 billing FAQ

What is HCPCS code J0901?
J0901 is a HCPCS Level II J-code used to bill Vadadustat oral 1mg for esrd under Medicare Part B and most medical (not pharmacy) benefits.
What is the billing unit for J0901?
One unit of J0901 represents 1 MG. Report the number of units equal to the dose administered divided by 1 MG.
How many units of J0901 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 J0901?
The Medicare Part B payment limit is $0.137 per unit (Q3 2026), based on ASP + 6%. After the 2% sequester the effective payment is about $0.134 per unit. Payment limits are revised quarterly.
Which NDCs bill under J0901?
3 NDCs currently map to J0901 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 J0901 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.