J9183 NDC Crosswalk, Billing Units, ASP Payment & Medicare Reimbursement

📋 J9183 summary

J9183 is a HCPCS Level II J-code used to bill Gemcitabine intravesical sys, billed per 225 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 J9183: Inlexzo

Code J9183 Billing unit 225 MG Payment limit $72,984.241/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 codeJ9183

DescriptorGemcitabine intravesical sys

Billing unit225 MG

Payment limit / unit$72,984.241

Est. ASP / unit$68,853.058 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

$72,984.241

Est. ASP / unit

$68,853.058 est.

Est. after 2% sequester

$71,524.556

HCPCS dosage

225 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 J9183 = 225 mg. Enter a regimen to convert dose → billing units and project a full course.

Dose per administration (mg) Frequency — every days Number of doses NDC / package billed (optional)

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 J9183 WITH EST. MEDICARE PAY

1 NDC map to J9183. Bill units = how many HCPCS units one package represents. Est. pay / pkg = payment limit ($72,984.241/unit) × that package's bill units.

NDC (11-digit)	Drug	Labeler	Package	Strength	Bill units	Est. pay / pkg	NADAC / unit	Status	Source
57894-0225-01	INLEXZO gemcitabine intravesical 225 mg/1 SYSTEM	Janssen	1 SYSTEM in 1 BOX (57894-225-01)	225 mg/1	1	$72,984.24	—	● 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.

⚠️ Don't confuse J9183 with… RELATED CODES

Adjacent HCPCS codes that share an ingredient or formulation with J9183. Billing units and payment limits differ — confirm the exact code, strength and form before billing.

Code	Descriptor	Billing unit	Payment limit / unit	How it differs from J9183
J9184	GEMCITABINE HCL	200 MG	$400.334	Different billing unit — 200 MG vs 225 MG
J9201	In gemcitabine hcl nos 200mg	200 MG	$2.884	Different billing unit — 200 MG vs 225 MG
J9196	Inj gemcitabine hcl (accord)	—	—	Related ingredient or formulation — confirm strength, form and billing unit before substituting.

Related codes matched on shared ingredient (CMS Medicare Part B Spending feed). Billing units and payment limits from the CMS ASP Pricing File. Always verify the precise HCPCS code for the product and strength administered.

🗺️ Where J9183 is utilized

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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 J9183

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

gemcitabine intravesical 1

NDC products by labeler

Janssen Biotech, Inc 1

🔗 Related NDC directory pages

🧪 All Gemcitabine Intravesical NDCsIngredient 🏭 All Janssen labeler NDCsLabeler 57894 📚 All Nucleoside Metabolic Inhibitor NDCsDrug class

🗃️ 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)

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

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.

❓ J9183 billing FAQ

What is HCPCS code J9183?

J9183 is a HCPCS Level II J-code used to bill Gemcitabine intravesical sys under Medicare Part B and most medical (not pharmacy) benefits.

What is the billing unit for J9183?

One unit of J9183 represents 225 MG. Report the number of units equal to the dose administered divided by 225 MG.

How many units of J9183 should I bill?

Divide the dose administered by the code's unit size (225 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 J9183?

The Medicare Part B payment limit is $72,984.241 per unit (Q3 2026), based on ASP + 6%. After the 2% sequester the effective payment is about $71,524.556 per unit. Payment limits are revised quarterly.

Which NDCs bill under J9183?

1 NDC currently map to J9183 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 J9183 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.

J9183 – Gemcitabine intravesical sys · NDC Crosswalk & Billing Units