HCPCS code J3243 – Tigecycline (Tygacil) injection, per 1 mg

Key takeaways

HCPCS code J3243 bills tigecycline (Tygacil) injection at 1 mg per unit, so units always equal the milligrams given.

The standard regimen is a 100 mg first dose (100 units), then 50 mg every 12 hours (50 units per dose).

Tigecycline is IV only and FDA-labeled for adults with complicated skin, complicated intra-abdominal, or community-acquired bacterial pneumonia infections.

Accord’s tigecycline has its own code, J3244, so check the vial’s labeler before you pick J3243.

Report the 11-digit NDC and add JZ when no drug is discarded, or a separate JW line for the wasted milligrams.

What is HCPCS code J3243 and what does it cover?

HCPCS code J3243 is the Level II drug code for tigecycline injection, billed in units of 1 mg. The Centers for Medicare and Medicaid Services (CMS) maintains it in the HCPCS Level II code set under the descriptor “Injection, tigecycline, 1 mg”. The code reports the drug only, so the infusion service goes on its own claim line.

Tigecycline is sold as Tygacil by Pfizer and as generic tigecycline for injection. One labeler is the exception: Accord Healthcare’s product bills under J3244, a separate code. The table below covers the fields a biller checks first.

Check the descriptor against the annual file on the CMS HCPCS overview page each year.

Tigecycline (Tygacil): FDA-approved indications and dosing

The Tygacil prescribing information limits the drug to adults aged 18 and older. It lists three indications, and each one maps to the diagnosis you put on the claim:

• Complicated skin and skin structure infections (cSSSI): treated for 5 to 14 days
• Complicated intra-abdominal infections (cIAI): treated for 5 to 14 days
• Community-acquired bacterial pneumonia (CABP): treated for 7 to 14 days

The label gives one regimen: a 100 mg first dose, then 50 mg every 12 hours. Each dose runs as an IV infusion over about 30 to 60 minutes. Patients with severe hepatic impairment (Child-Pugh C) get 100 mg first, then a reduced 25 mg every 12 hours.

Tigecycline carries a boxed warning for increased all-cause mortality, and the label says to reserve it for cases where alternatives are not suitable. It is not indicated for diabetic foot infections or for hospital-acquired or ventilator-associated pneumonia. Payers read those limits closely, so they shape which claims get paid.

How to calculate billing units for J3243

One unit of J3243 equals 1 mg of tigecycline, so the unit count matches the documented dose in milligrams. The trap is the vial: a 50 mg vial is 50 units, not 1. Billing the vial count instead of milligrams underpays the claim by a factor of 50.

Payers differ on whether two doses given on one date of service go on one line or two. Check the payer manual, then apply the same rule to every tigecycline claim. A dose that never reaches the patient is not billed as administered.

ICD-10-CM codes that support J3243

There is no national coverage determination for tigecycline, so payers judge medical necessity against the FDA label. Pair J3243 with the most specific diagnosis the chart supports for one of the three labeled infections. Add the organism code when culture results identify one.

Two pairings invite a denial because they fall outside the label. A diabetic foot infection, such as E11.621 with an L97 ulcer code, is not an approved use. Neither is ventilator-associated pneumonia (J95.851) or another hospital-acquired pneumonia.

Unspecified codes like L03.90 and J15.9 pass most edits, but site and laterality codes are safer when the note documents them. Code to the highest specificity the record supports.

NDC reporting and JW/JZ modifiers for J3243

Medicaid programs require the 11-digit National Drug Code (NDC) on drug claims, and many commercial plans and Medicare contractors ask for it too. The NDC must match the vial given, so record it at the point of administration.

• Convert to 11 digits. Tygacil’s single vial carries NDC 0008-4990-19, and its 10-vial carton carries 0008-4990-20. In 5-4-2 format those become 00008-4990-19 and 00008-4990-20.
• Use the N4 qualifier. On the 837P the NDC goes in loop 2410. On a paper CMS-1500 it goes in the shaded area of box 24A.
• Report the NDC quantity. Lyophilized powder vials report in UN (each), so a 100 mg first dose from two vials is UN2.
• Check the labeler. A generic vial from Accord Healthcare belongs on J3244, not J3243.

Tigecycline ships in single-dose vials, so the CMS JW and JZ modifier policy applies wherever Medicare pays for the drug separately. Append JZ when the full vial is given. When part of a vial is discarded, bill the wasted milligrams on a second J3243 line with JW, and document the amount in the record.

Medicare coverage and reimbursement for HCPCS code J3243

In a physician office or infusion suite, Medicare Part B pays separately payable drugs at the average sales price (ASP) plus 6%. CMS updates ASP every quarter, so the J3243 rate changes four times a year. Pull the current figure from the CMS ASP pricing files rather than a saved fee sheet.

• Hospital outpatient departments bill under OPPS, where CMS packages lower-cost drugs into the visit payment. Check the Addendum B status indicator for J3243.
• On an inpatient stay, the drug is not billed separately. It rolls into the hospital’s MS-DRG payment.
• Medicare generally pays 80% of the allowed amount after the Part B deductible, and the patient owes the remaining 20%.
• Tracking quarterly ASP changes is part of revenue cycle management for any practice that infuses Part B drugs.

Prior authorization requirements for J3243

Traditional Medicare Part B does not run a prior authorization program for tigecycline. Medical necessity is judged on the claim and the record instead. Medicare Advantage, Medicaid and commercial plans set their own rules, and many restrict tigecycline because of its boxed warning.

Before the first outpatient infusion, confirm these points with the plan:

• Whether J3243 needs prior authorization, and for how many doses or days
• Whether the plan requires a culture result or documented failure of a first-line antibiotic
• Whether the infusion is covered in the office, an infusion center or the hospital outpatient department
• The authorization number and approved date range, entered on the claim

How to bill the infusion alongside J3243

J3243 covers the drug, so the infusion needs its own CPT code on a separate line. Because a tigecycline dose runs 30 to 60 minutes, CPT 96365 for the initial hour of a therapeutic IV infusion is the usual pairing.

Record start and stop times in the administration note, because infusion codes are time-based. When an E/M visit happens the same day, it needs to be significant and separately identifiable to support modifier 25.

The flow below puts the labeler, unit, wastage, NDC and infusion checks in the order a biller works through them on one dose.

Codes commonly confused with J3243

Three nearby codes cause most wrong-code denials on tigecycline claims. The comparison below shows how to tell them apart.

If an antiemetic was given, our guide to HCPCS code J3250 covers it. For dalbavancin, see HCPCS code J0875.

Common claim denial reasons for J3243 and how to avoid them

Most J3243 denials trace back to a handful of fixable errors. Use the table below with our list of denial codes to match each remittance code to its cause.

Track denials by type, not just by dollar amount, as part of your denial management process. One unit-count denial often points to a template error affecting dozens of claims. A superbill that pre-fills the NDC and milligram units stops the error at charge capture.

Documentation requirements to support J3243 claims

The chart has to support the drug, the dose and the diagnosis on the claim. Keep these elements in every tigecycline record:

• A signed order naming tigecycline, the dose in milligrams, the route and the frequency
• The diagnosis and site of infection, with culture results where available
• The reason tigecycline was chosen over alternatives, given the boxed warning
• Infusion start and stop times, the dose given and the administering clinician
• The NDC and lot number of each vial used
• Any discarded amount in milligrams, matching the JW line on the claim

A missing element gives the payer grounds for a medical necessity denial and leaves an appeal with little to stand on. A clean claim checklist and a regular compliance audit catch them before a payer does.

How Pabau supports J3243 billing

Billing tigecycline often means juggling a paper infusion log, a separate billing sheet and a payer portal. Units get typed by vial, NDCs get copied from memory, and wastage goes unrecorded.

Pabau, the practice management and billing platform we build, keeps the infusion record and the charge in one place. Clinicians chart the dose, times and vial details in the patient record. Claims management then builds the claim from that record and tracks denials by code.

The result is fewer resubmissions on a drug where a single unit error can cost the full dose.

Bill IV antibiotics cleanly with Pabau

Chart the dose, vials and infusion times once, and let Pabau carry them onto the claim for drugs like tigecycline.

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Conclusion

J3243 is simple arithmetic wrapped in strict rules. Units equal milligrams, the diagnosis has to sit inside the label, and the vial decides between J3243 and J3244.

Get those right, add the NDC and the JZ or JW modifier, and tigecycline claims stop bouncing. To see how Pabau carries infusion details onto the claim, book a demo.

Continue your research

Billing another IV antibiotic? HCPCS code J0875 covers dalbavancin unit math, prior authorization and NDC reporting.

Want fewer rejections across all codes? Clean claim submission outlines the pre-submission checks that cut first-pass denials.

Tracking denials across J-codes? Denial management strategies explains how to categorize and resolve recurring denials by code and payer.

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