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J2804

J2804 – Inj, rifampin, 1 mg · NDC Crosswalk & Billing Units

HCPCS Level II J-code · Medicare Part B drug billing
J-code ● 3 NDCs crosswalked per 1 MG $0.172/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

📋 J2804 summary

J2804 is a HCPCS Level II J-code used to bill rifampin, 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 J2804: Rifadin Iv

Code J2804 Billing unit 1 MG Payment limit $0.172/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 codeJ2804
DescriptorInj, rifampin, 1 mg
Billing unit1 MG
Payment limit / unit$0.172
Est. ASP / unit$0.162 est.
Mapped NDCs3
Data periodQ3 2026
Last updated2026-08-20

💊 About Rifampin DRUG GUIDE

Rifampin treats all forms of tuberculosis (TB).

It is almost always used in combination with other antibiotics — your doctor will build a multi-drug regimen tailored to your infection.

Treatment usually runs for at least 6 months total.Rifampin is also used to clear Neisseria meningitidis bacteria from the nose and throat in people who carry the germ without being sick themselves.

It is not used to treat active meningococcal disease.

Read the full Rifampin drug guide →
Clinical overview from our editorial drug guide for Rifampin. 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
$0.172
Est. ASP / unit
$0.162 est.
Est. after 2% sequester
$0.169
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 J2804 = 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 J2804 WITH EST. MEDICARE PAY

3 NDCs map to J2804. Bill units = how many HCPCS units one package represents. Est. pay / pkg = payment limit ($0.172/unit) × that package's bill units.
NDC (11-digit)DrugLabelerPackageStrength Bill units Est. pay / pkg NADAC / unit StatusSource
00068-0597-01 Rifadin IV rifampin 600 mg/10mL INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION Sanofi-Aventis 1 VIAL, GLASS in 1 CARTON (0068-0597-01)... 600 mg/10mL 600 $103.20 — ● Active CMS + PDAC
63323-0351-20 Rifampin 600 mg/1 INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION Fresenius 1 VIAL in 1 BOX (63323-351-20) / 1 INJECT... 600 mg/1 600 $103.20 — ● Active CMS ASP
67457-0445-60 Rifampin 600 mg/10mL INJECTION, POWDER, LYOPHILIZED, FOR SOLUTION Mylan 1 VIAL in 1 CARTON (67457-445-60) / 10 mL... 600 mg/10mL 600 $103.20 — ● 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
$94.80
Medicare paid
$74.32
Submitted services
18,000
Denial rate
96.7%
Allowed / service
$0.16
Submitted charges
$17.5K
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 J2804 is utilized

⏳
The geographic utilization map is building for this code — it aggregates millions of CMS Part B claim lines, then caches the result. Refresh in a moment; if it doesn’t appear, this code may have no reportable Part B utilization.

📊 What bills under J2804

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
rifampin 1
NDC products by labeler
Sanofi-Aventis U.S. 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
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)
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.

❓ J2804 billing FAQ

What is HCPCS code J2804?
J2804 is a HCPCS Level II J-code used to bill Inj, rifampin, 1 mg under Medicare Part B and most medical (not pharmacy) benefits.
What is the billing unit for J2804?
One unit of J2804 represents 1 MG. Report the number of units equal to the dose administered divided by 1 MG.
How many units of J2804 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 J2804?
The Medicare Part B payment limit is $0.172 per unit (Q3 2026), based on ASP + 6%. After the 2% sequester the effective payment is about $0.169 per unit. Payment limits are revised quarterly.
Which NDCs bill under J2804?
3 NDCs currently map to J2804 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 J2804 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.