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J2601

J2601 – Inj, vasopressin (baxter) · NDC Crosswalk & Billing Units

HCPCS Level II J-code · Medicare Part B drug billing
J-code ● 2 NDCs crosswalked per 1 UNIT $1.753/unit ASP+6%

This page is curated, coded, and maintained by

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

📋 J2601 summary

J2601 is a HCPCS Level II J-code used to bill vasopressin (baxter), billed per 1 UNIT. 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 J2601: Vasopressin-0.9% Nacl, Vasopressin In

Code J2601 Billing unit 1 UNIT Payment limit $1.753/unit NDC-Crosswalk 2 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 codeJ2601
DescriptorInj, vasopressin (baxter)
Billing unit1 UNIT
Payment limit / unit$1.753
Est. ASP / unit$1.654 est.
Mapped NDCs2
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
$1.753
Est. ASP / unit
$1.654 est.
Est. after 2% sequester
$1.718
HCPCS dosage
1 UNIT
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 J2601 = 1 unit. 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 J2601 WITH EST. MEDICARE PAY

2 NDCs map to J2601. Bill units = how many HCPCS units one package represents. Est. pay / pkg = payment limit ($1.753/unit) × that package's bill units.
NDC (11-digit)DrugLabelerPackageStrength Bill units Est. pay / pkg NADAC / unit StatusSource
00338-9640-12 Vasopressin in 0.9% Sodium Chloride 20 [USP'U]/100mL INJECTION Baxter 12 BAG in 1 CARTON (0338-9640-12) / 100 m... 20 [USP'U]/100mL 240 $420.72 — ● Active CMS + PDAC
00338-9647-12 Vasopressin in 0.9% Sodium Chloride 40 [USP'U]/100mL INJECTION Baxter 12 BAG in 1 CARTON (0338-9647-12) / 100 m... 40 [USP'U]/100mL 480 $841.44 — ● 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
$3.7K
Claims
75
Beneficiaries
75
Spend / beneficiary
$49.93
Spend / claim
$49.93
Trend by period
Where J2601 ranks among Part B drugs · 2026 (Q1) · neighbors ±5
Total spending — #720 of 824
#715 HEPARIN FLUSH J1642 $4K #716 DIAZEPAM J3360 $3.9K #717 COMIRNATY (5-11Y)* 91319 $3.8K #718 ERAXIS J0348 $3.8K #719 ACETAMINOPHEN(J0131) J0131 $3.7K #720 VASOPRESSIN-0.9% NAC... J2601 $3.7K #721 DDAVP* J2597 $3.6K #722 DEMEROL* J2175 $3.4K #723 LEVOTHYROXINE SODIUM... J0650 $3.4K #724 MESNA* J9209 $3.4K #725 CYSTO-CONRAY II* Q9958 $3.3K
Total claims — #653 of 824
#648 PURAPLY 1 SQ CM** Q4195 80 #649 XWRAP 1 SQ CM** Q4204 80 #650 PROCAINAMIDE HCL J2690 79 #651 VALPROATE SODIUM J3379 79 #652 KEPPRA* J1953 75 #653 VASOPRESSIN-0.9% NAC... J2601 75 #654 CYGNUS DUAL PER SQ C... Q4282 75 #655 DOPAMINE HCL IN 5% D... J1265 74 #656 THYMOGLOBULIN J7511 74 #657 NEBUPENT(J2516)* J2516 73 #658 WILATE J7183 73

Full breakdown by period (2)
PeriodTotal spendBeneficiariesClaims$/beneficiary$/claim
2026 (Q1) $3.7K 75 75 $49.93 $49.93
2025 (Q1-Q4) $16.1K 244 244 $66.17 $66.17
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.

📊 What bills under J2601

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
Vasopressin in 0.9% Sodium Chlorid... 2
NDC products by labeler
Baxter Healthcare Corporation 2

🗃️ 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 + DMEPDAC (PDAC)
2 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
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.

❓ J2601 billing FAQ

What is HCPCS code J2601?
J2601 is a HCPCS Level II J-code used to bill Inj, vasopressin (baxter) under Medicare Part B and most medical (not pharmacy) benefits.
What is the billing unit for J2601?
One unit of J2601 represents 1 UNIT. Report the number of units equal to the dose administered divided by 1 UNIT.
How many units of J2601 should I bill?
Divide the dose administered by the code's unit size (1 UNIT) 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 J2601?
The Medicare Part B payment limit is $1.753 per unit (Q3 2026), based on ASP + 6%. After the 2% sequester the effective payment is about $1.718 per unit. Payment limits are revised quarterly.
Which NDCs bill under J2601?
2 NDCs currently map to J2601 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 J2601 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.