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J1670

J1670 – Injection, tetanus immune globulin, human, up to 250 units · NDC Crosswalk & Billing Units

HCPCS Level II J-code · Medicare Part B drug billing
J-code ● 1 NDC crosswalked per 250 UNITS $595.017/unit ASP+6%

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

📋 J1670 summary

J1670 is a HCPCS Level II J-code used to bill tetanus immune globulin, human, up to 250 units, billed per 250 UNITS. 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 J1670: Hypertet

Code J1670 Billing unit 250 UNITS Payment limit $595.017/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 codeJ1670
DescriptorInjection, tetanus immune globulin, human, up to 250 units
Billing unit250 UNITS
Payment limit / unit$595.017
Est. ASP / unit$561.337 est.
Mapped NDCs1
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
$595.017
Est. ASP / unit
$561.337 est.
Est. after 2% sequester
$583.117
HCPCS dosage
250 UNITS
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, tetanus immune globulin, human, up to 250 units
CoverageD — Special coverage instructions apply
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 date1997-01-01
Date added1986-01-01
Source: CMS HCPCS Level II code file (imported via admin).

🧮 Dosing & billing-units calculator HCPCS UNITS

One billing unit of J1670 = 250 units. 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 J1670 WITH EST. MEDICARE PAY

1 NDC map to J1670. Bill units = how many HCPCS units one package represents. Est. pay / pkg = payment limit ($595.017/unit) × that package's bill units.
NDC (11-digit)DrugLabelerPackageStrength Bill units Est. pay / pkg NADAC / unit StatusSource
13533-0634-02 HyperTET Tetanus Immune Globulin (Human) 250 [iU]/mL INJECTION GRIFOLS 1 SYRINGE, GLASS in 1 BOX (13533-634-02)... 250 [iU]/mL 1 $595.02 — ● 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
$16.9K
Claims
55
Beneficiaries
55
Spend / beneficiary
$307.38
Spend / claim
$307.38
Trend by period
Where J1670 ranks among Part B drugs · 2026 (Q1) · neighbors ±5
Total spending — #665 of 824
#660 TEPADINA(J9342)* J9342 $17.9K #661 MYCOPHENOLATE MOFETI... J7528 $17.8K #662 DACARBAZINE J9130 $17.7K #663 CLONIDINE HCL* J0735 $17.2K #664 ALBUTEROL SULFATE(J7... J7611 $17.1K #665 HYPERTET J1670 $16.9K #666 VANCOMYCIN HCL-0.9%... J3373 $16K #667 PERSERIS J2798 $15.2K #668 RUCONEST J0596 $15.2K #669 ACYCLOVIR SODIUM J0133 $14.7K #670 PIPERACILLIN-TAZOBAC... J2543 $14.7K
Total claims — #690 of 824
#685 NEOX NEOX RT OR CLAR... Q4148 57 #686 AMNIOWRAP2 PER SQ CM... Q4221 57 #687 NIPENT J9268 56 #688 FLEXHD** Q4128 56 #689 AMNICORE PRO, PER SQ... Q4298 56 #690 HYPERTET J1670 55 #691 GLYCOPYRROLATE(J1596... J1596 54 #692 ADYNOVATE J7207 54 #693 EDARAVONE* J1301 53 #694 LABETALOL HCL J1920 53 #695 ABIO XPL ABIO XPL HY... Q4355 52

Full breakdown by period (2)
PeriodTotal spendBeneficiariesClaims$/beneficiary$/claim
2026 (Q1) $16.9K 55 55 $307.38 $307.38
2025 (Q1-Q4) $97.3K 283 283 $343.91 $343.91
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
$4.7K
Medicare paid
$18.3K
Submitted services
140
Denial rate
21.4%
Allowed / service
$42.83
Submitted charges
$7K
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 J1670 is utilized CMS · BY PROVIDER · 2024

Medicare Part B services for this code by the rendering provider's state — 162 services across 6 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 J1670

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
Tetanus Immune Globulin (Human) 1
NDC products by labeler
GRIFOLS USA, LLC 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.

❓ J1670 billing FAQ

What is HCPCS code J1670?
J1670 is a HCPCS Level II J-code used to bill Injection, tetanus immune globulin, human, up to 250 units under Medicare Part B and most medical (not pharmacy) benefits.
What is the billing unit for J1670?
One unit of J1670 represents 250 UNITS. Report the number of units equal to the dose administered divided by 250 UNITS.
How many units of J1670 should I bill?
Divide the dose administered by the code's unit size (250 UNITS) 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 J1670?
The Medicare Part B payment limit is $595.017 per unit (Q3 2026), based on ASP + 6%. After the 2% sequester the effective payment is about $583.117 per unit. Payment limits are revised quarterly.
Which NDCs bill under J1670?
1 NDC currently map to J1670 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 J1670 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.