Catheter Upcoding: Closed Kits, Coudé Tips and Monthly Quantities

Catheter upcoding in closed-system billing means charging for a more expensive catheter system than the supplier actually furnished. The patient can be real, the prescription genuine and the shipment delivered, while the claim describes something else. If you work in purchasing, fulfillment or billing, you may know which catheter left the warehouse and which code went to Medicare. That comparison is where this kind of durable medical equipment fraud becomes visible.

What Does “Closed System Catheter” Mean?

A closed system catheter combines the catheter and urine collection into a sterile, self-contained system. For Medicare billing, the product must meet the requirements for a complete sterile insertion kit or its no-touch equivalent. The urological supplies policy article ties payment to what the supplier furnishes.

A conventional insertion kit contains the catheter, lubricant when applicable, gloves, antiseptic solution, applicators, a drape and a collection tray or bag. A no-touch system must accomplish sterile intermittent catheterization without additional supplies. The collection bag does a job inside the system. The packaging that holds the shipment does not take its place.

The article also accepts a sterile catheter shipped with a separately packaged sterile kit holding all the insertion and collection supplies. Loose gloves, lubricant and other individual supplies sent alongside a plain catheter do not become a kit merely because they share a shipping box. Billing an A4353 insertion kit when the supplier furnished only a plain catheter misdescribes the product. Separately billing components already included in a kit is unbundling: charging again for supplies the kit payment already covers.

What A4351, A4352 and A4353 Mean

A4351 identifies a straight-tip intermittent catheter, A4352 a coudé or curved-tip catheter, and A4353 a catheter with insertion supplies. The tip and the kit answer different questions: which catheter was supplied, and what came with it.

For dates of service beginning January 1, 2026, the Centers for Medicare & Medicaid Services separated hydrophilic products into new codes. The product comparison now looks like this:

A hydrophilic coating binds water to the catheter and is part of the product itself. Pre-lubrication alone does not establish that coating. A supplier billing the hydrophilic code is claiming that specific product feature.

The agency expected suppliers to know which products they furnished and bill accordingly, even though prescriptions typically do not name the billing code.

MITRE’s September 2023 report for the Centers for Medicare & Medicaid Services, Intermittent Urinary Catheters HCPCS Code Research, identified the discretion between the order and the shipment:

The prescription describes the order. The shipment identifies what the patient actually received. The claim tells Medicare what to pay for.

The same report identified catheters with grip sleeves being coded as A4353 kits when patients only needed the sleeve. It found sleeves largely offered as insertion accessories rather than as part of a kit. A grip sleeve alone does not meet the complete-kit or self-contained-system requirement.

What Qualifies a Patient for a Sterile Catheter Kit?

Medicare requires more than a need for catheterization to cover a sterile kit. The urological supplies coverage policy ties kit eligibility to nursing-facility residence, immunosuppression, reflux documented by imaging or qualifying recurrent urinary tract infections.

For the infection route, the record must show two distinct infections during the preceding 12 months on the specified sterile catheter regimen, before kit use began. A kit claim needs that clinical history as well as the right product in the box.

Since January 1, 2026, a documented spinal cord injury at any level satisfies the kit’s immunocompromise criterion.

When a Coudé Tip Needs Its Own Medical Reason

A coudé catheter claim needs medical-record support for that particular catheter. The current coverage policy gives inability to catheterize with a straight tip as an example. The question is why the curved tip is medically necessary for this patient.

Effective January 1, 2026, the coverage policy removed its statement that intermittent coudé use in female beneficiaries was rarely reasonable and necessary. It retained the requirement to document medical necessity and updated the wording to include the hydrophilic coudé code.

How Many Catheters Will Medicare Pay for Per Month?

Medicare lists a usual maximum of 200 intermittent catheters per month for the specified supply codes, with that same maximum applying to A4297 and A4353 kits combined. Two hundred catheters is a monthly ceiling, not an automatic quantity for every patient. The supplier must not dispense more than the patient’s expected use.

The quantity limit answers how much may be supplied. Kit eligibility and coudé medical necessity answer why that product is covered. A claim can fit under the quantity ceiling while the product or clinical documentation still fails the applicable requirement.

Permanent Need and the Next Refill

A permanent urological condition, continued medical need and a refill request establish different parts of the claim. The policy article requires permanent urinary incontinence or retention and accepts a condition of long and indefinite duration, based on the medical record and treating practitioner’s judgment.

Each refill requires contact and a documented affirmative response before dispensing. Permanent need does not authorize automatic shipments.

Contact may occur no sooner than 30 calendar days before the expected end of the existing supply. Delivery may occur no sooner than 10 calendar days before that point. For a refill employee, those dates can show shipments going out ahead of the patient’s need.

A Cheaper Catheter Became a More Expensive Claim

In its criminal-case announcement from Montana, the Justice Department described a respiratory therapist who furnished a patient with a less expensive catheter while fraudulently billing Medicaid for more expensive closed-system catheters. The substitution was the scheme: one product reached the patient, another reached the payer on paper.

An insider may see both sides: the item purchased and shipped, and the item charged. We connect that gap to the supplier’s billing decisions.

The economics give that comparison weight. In its review of fiscal year 2020 catheter payments, the Department of Health and Human Services’ Office of Inspector General found Medicare and beneficiaries paid $407 million for catheters that cost suppliers $121 million to acquire. Patients and taxpayers pay the bill. An upcoded claim charges them for a more expensive product than the patient received.

What the Catheter Claim File Should Show

The claim file connects the product, clinical reason, written order, delivery and refill request. Medicare’s catheter policy requires the supplier to receive the standard written order before submitting the claim and to retain proof of delivery. The medical record supports the specific catheter or kit. The refill record shows the patient’s affirmative response before another supply goes out.

The inspector general’s February 2025 catheter audit estimated $35.1 million in improper payments out of $303.3 million paid during July 2021 through June 2022.

For billing and healthcare staff, the useful account is specific: what the supplier ordered, what it sent, what it billed and who chose that description. We work with insiders to connect those records and decisions to the claim.

The National Surge Concentrated in the Higher-Paying Codes

The national catheter billing surge concentrated in coudé catheters and sterile kits. The plain straight-tip code did not share the same surge. In its July 2024 rulemaking, the Centers for Medicare & Medicaid Services reported claims increasing by 163 percent for A4352 and over 5,000 percent for A4353 from 2022 to 2023. The agency identified both codes as showing significant, anomalous and highly suspect billing activity.

The agency’s separate urinary catheter case study described a group of suppliers that had recently changed ownership. Its investigation found that patients had not received the catheters, physicians had not ordered them and the supplies were not needed.

When the Supplier Shapes the Order

C.R. Bard agreed to a $17 million civil settlement in January 2025 over allegations involving free samples and discounts that encouraged urology practices to use Bard’s prescription form for intermittent catheters. The case also involved Liberator Medical Supply. A former employee of another catheter company brought the whistleblower case.

The alleged influence began before billing, in the health care practice choosing the prescription form. Sample records, discounts and communications with the practice can explain how an order reached the supplier. That is a different part of the transaction from the product substitution in the Montana criminal case, but it gives an insider another place to recognize a supplier’s decisions.

A whistleblower case under the False Claims Act can pay 15% to 30% of what the government recovers.

When You Know What Left the Warehouse

If the catheter that shipped and the paid claim tell different stories, speak with our whistleblower experts about the supplier’s decisions. We work beside you and bring in durable medical equipment whistleblower lawyers who understand catheter coding, medical-necessity records and supplier billing to build your strongest catheter whistleblower case.