HCPCS code A4353: Intermittent catheter kit billing guide

Key Takeaways

HCPCS code A4353 covers a non-hydrophilic intermittent urinary catheter billed as a sterile kit with insertion supplies bundled in, distinct from the unbundled A4351 and A4352 catheter codes.

Effective January 1, 2026, CMS created three new codes, A4295, A4296, and A4297, for hydrophilic catheters; billing a hydrophilic kit under A4353 after that date risks a denial.

Medicare covers A4353 under the DMEPOS benefit when the medical record documents recurrent urinary tract infections, immunocompromised status, spinal cord injury, or nursing-facility residency.

Claims need one of four modifiers, KX, GA, GY, or GZ; claims missing all four are rejected as incomplete under LCD L33803.

For anyone who bills intermittent catheters, A4353 used to be the easy one, the sterile kit code with gloves, drape, lubricant, and the catheter all bundled onto a single line. Then January 1, 2026 arrived, and it stopped covering a big chunk of what people were still putting on it.

The issue catching billing teams out right now is hydrophilic-coated kits. They no longer belong on A4353. CMS moved them onto three brand-new codes, so a claim that sailed through last year can bounce back denied today. The descriptor still reads word for word the same, which is exactly why the denials come as a surprise, nothing looks wrong at a glance.

HCPCS code A4353: Definition and clinical description

HCPCS code A4353 covers a non-hydrophilic intermittent catheter, straight or coude tip, billed with a full set of insertion supplies rather than as a bare catheter.

Since January 1, 2026 that scope has narrowed to non-hydrophilic kits, so it pays to be precise about what actually sits inside the code before we get to coverage and payment.

The official HCPCS Level II descriptor for A4353 reads: Intermittent urinary catheter; with insertion supplies. “Insertion supplies” is the operative phrase. It refers to the accessories bundled with the catheter that enable sterile technique during self-catheterisation or clinician-assisted catheterisation.

These include sterile gloves, a sterile drape or underpad, lubricating gel or coating, and in closed-system configurations, a pre-attached collection bag.

That descriptor hasn’t changed for 2026. But because hydrophilic-coated kits now have their own code, A4353 in practice now describes only non-hydrophilic bundled kits.

A4353 sits within the HCPCS Level II A-code range, maintained by the Centers for Medicare and Medicaid Services, CMS, as part of its annual HCPCS Level II code update cycle. It falls under the Durable Medical Equipment, Prosthetics, Orthotics, and Supplies (DMEPOS) benefit.

Suppliers must be enrolled as DMEPOS providers to bill this code to Medicare.

What the bundled insertion supplies include

Not every catheter kit qualifies. The insertion supplies bundled with A4353 typically cover the following components:

• Sterile gloves (one pair)
• Sterile drape or underpad
• Pre-attached or separate collection bag (for closed-system configurations)
• Lubricating gel packet or non-hydrophilic coating on the catheter itself (hydrophilic-coated kits bill under A4297, not A4353)
• Antiseptic wipes or cleansing solution

When the catheter ships without any of these components, or when supplies are ordered separately, A4351 (straight tip) or A4352 (coude tip) applies instead. The presence or absence of insertion supplies is the single most important factor in code selection.

The same kit-versus-component logic shows up elsewhere in DMEPOS billing. A4629 prices a full tracheostomy care kit the way A4353 prices a full catheter kit, while a single-item respiratory supply like A4624 is billed on its own the way A4351 is.

Important: What changed for hydrophilic catheters on January 1, 2026

CMS updated its HCPCS Level II code set effective January 1, 2026, and intermittent catheter billing was one of the areas affected. Three new codes carved hydrophilic catheters out of the existing A4351, A4352, and A4353 descriptors:

• A4295: hydrophilic intermittent catheter, straight tip, each
• A4296: hydrophilic intermittent catheter, coude tip, each
• A4297: hydrophilic intermittent catheter with insertion supplies

For dates of service on or after January 1, 2026, suppliers must stop billing hydrophilic catheters under A4351, A4352, or A4353. A claim for a hydrophilic kit billed under the old codes after that date carries real denial risk, since the A4351 and A4352 descriptors no longer list hydrophilic coating among their covered examples.

Practically, that means a plain hydrophilic straight-tip catheter that used to bill as A4351 now bills as A4295. A hydrophilic coude-tip catheter that used to bill as A4352 now bills as A4296. A hydrophilic catheter bundled with insertion supplies, the kit this article otherwise covers under A4353, now bills as A4297. This split is detailed in CGS Medicare’s urological supplies bulletin.

Do you need a new order for the new codes?

Not automatically. Per DME MAC Policy Article A55426, a new written order is required only if the patient’s existing order specifically names A4351, A4352, or A4353 by HCPCS code. If the order instead describes the item generically, for example “intermittent catheter kit, 14 Fr,” or names a brand and model number, that order remains valid under the new codes and no new SWO is needed.

A4353 vs A4351 vs A4352: Choosing the correct intermittent catheter HCPCS code

These three codes describe the same product category but differ in what is bundled with the catheter, and now in whether the coating is hydrophilic.

Selecting the wrong one is one of the most common reasons DMEPOS claims for intermittent catheters are denied or downcoded. Use this comparison to select correctly before claim submission.

A key practical note: A4353 does not specify tip type. A supplier can use it for either straight or coude-tip catheters, provided the kit includes the defined insertion supplies and the coating is non-hydrophilic.

If a patient needs a hydrophilic, coude-tip catheter shipped as a closed-system kit with all accessories, A4297 is now the correct choice, not A4353.

When A4354 (insertion tray with drainage bag but without catheter) is ordered separately alongside A4351 or A4352, that combination is not equivalent to billing A4353. Suppliers should not bill A4351 or A4352 plus A4354 if the catheter and supplies shipped as a single unit. The correct code in that scenario is A4353 alone, or A4297 if the catheter is hydrophilic.

Medicare coverage criteria for HCPCS A4353

Medicare Part B covers intermittent catheters under the DMEPOS benefit, with coverage governed by Local Coverage Determinations issued by individual Medicare Administrative Contractors. Coverage is not automatic: the claim must meet documented medical necessity criteria.

The standard Medicare coverage criteria for intermittent catheter codes, including A4353, typically require all of the following:

• A written order from the treating physician documenting the covered diagnosis
• A covered ICD-10-CM diagnosis (bladder dysfunction, neurogenic bladder, urinary retention, spinal cord injury, and similar conditions are commonly listed in MAC LCDs; verify the current covered code list against your MAC’s active LCD)
• Medical necessity documented in the patient’s clinical record, confirming the patient cannot void adequately and requires catheterisation
• Enrollment of the billing supplier as an accredited DMEPOS provider

A4353 is a sterile kit, not a standard catheter, so LCD L33803 sets a narrower bar on top of the general criteria above. The medical record needs to show at least one of the following before a sterile insertion kit is medically necessary:

• Recurrent, symptomatic urinary tract infections, generally two or more within a 12-month period, while using a standard (non-kit) intermittent catheter
• Immunocompromised status, such as a transplant recipient, a patient on chronic immunosuppressive therapy, or a patient with HIV/AIDS
• Spinal cord injury or spinal cord disease, at any level, with impaired bladder emptying
• Residency in a hospital, skilled nursing facility, or intermediate care facility, where infection-control risk supports a closed, sterile system

Practices treating pelvic-floor conditions or male urologic disorders both order intermittent catheters often enough that it’s worth building this documentation step into intake, whether that’s pelvic health software tracking recurrent UTI history or men’s health clinic software flagging a new spinal cord injury diagnosis.

On quantity limits: industry guidance from manufacturers such as Hollister commonly references up to 200 catheters per month for most covered diagnoses.

However, quantity limits are set by individual MAC LCDs and may vary. Always verify the current limit against your MAC’s active Local Coverage Determination before billing at maximum quantities. Billers who use structured medical documentation workflows are better positioned to meet MAC documentation standards at audit.

No-touch and closed system catheter billing under A4353

The terms “no-touch catheter” and “closed system catheter” describe technique and product configuration, not a separate billing category. Both map to HCPCS code A4353 when the catheter system includes the required insertion supplies and the coating is non-hydrophilic.

Noridian Healthcare Solutions, the JD DME MAC, has published correct coding guidance clarifying when A4353 is required for no-touch and closed system catheters.

Per that guidance, A4353 is the correct code when the catheter system includes a pre-attached collection bag or when all necessary insertion accessories ship as part of the catheter package. A4351 or A4352 are not appropriate substitutes for closed system products that include insertion supplies.

Clinicians ordering catheters for patients should document the specific reason for the no-touch or closed-system configuration, tying it to one of the four LCD L33803 criteria above, recurrent UTI, immunocompromised status, spinal cord injury, or nursing-facility residency, rather than a general note about difficulty of insertion.

This documentation supports medical necessity if the claim is reviewed. Structured client-record software that timestamps and organises this evidence, such as structured client-record tools, keeps it accessible for audits.

2026 Medicare fee schedule and reimbursement rates for A4353

Reimbursement rates for HCPCS code A4353 vary by MAC jurisdiction and competitive bidding area (CBA). CMS publishes current DMEPOS fee schedule rates on its DMEPOS fee schedule page; pull the file for your specific MAC jurisdiction rather than relying on a national average.

Third-party aggregators indicate that A4353 rates across MAC jurisdictions have generally fallen in the range of approximately $6 to $10 per kit in recent years, since the code prices a complete sterile kit rather than a single catheter. That’s meaningfully higher than the roughly $1.50 to $3.00 per catheter typically paid for the unbundled A4351 or A4352 codes.

Treat any published rate as a benchmark to verify, not a guaranteed reimbursement amount.

Two factors significantly affect final reimbursement:

• Competitive Bidding Areas (CBAs): In designated CBAs, DMEPOS suppliers must hold a competitive bidding contract to be reimbursed for covered items. Outside CBAs, standard MAC fee schedule rates apply.
• MAC jurisdiction: Each Medicare Administrative Contractor sets its own fee schedule. Suppliers billing in Noridian JD, Palmetto GBA, CGS, or other jurisdictions should pull rates directly from the applicable MAC fee schedule files rather than relying on national averages.

For the most current A4353 rates, use PGM’s HCPCS lookup tool, which pulls data directly from CMS DMEPOS fee schedule files. Cross-reference with your MAC’s published fee schedule to confirm jurisdiction-specific rates.

Reduce billing errors before they reach the payer

Pabau helps DMEPOS suppliers and practice billing teams manage documentation, apply correct modifiers, and track A4353 claims from order to remittance – all in one place.

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Documentation requirements and medical necessity for A4353

Documentation failures are behind a large share of A4353 claim denials. Medicare’s DMEPOS audit framework scrutinises written orders, clinical notes, and supplier records. All three must align before a claim survives post-payment review.

The minimum documentation set for A4353 claims includes:

• Written order: Signed by the treating physician or qualified non-physician practitioner, dated before the supply date, specifying the product, quantity, and diagnosis
• Medical necessity documentation: Clinical notes confirming the patient’s inability to void adequately, the underlying diagnosis, and why catheterisation is required
• Supplier delivery records: Proof of delivery (POD) signed by the beneficiary or authorised representative, including item description and quantity
• Refill documentation: For ongoing supply, a new written order or documented patient contact confirming continued need, per MAC refill policy
• ICD-10-CM diagnosis code: The covered diagnosis on the claim must match the treating physician’s written order and clinical notes

Gaps between any of these documents are audit red flags. A written order that predates the earliest supply date, a POD that is missing the patient signature, or a diagnosis on the claim that does not appear in the physician’s notes can each result in full claim recoupment. Practices that standardise their documentation workflows, using structured digital intake forms for intake and consent, reduce the gaps that auditors target.

How an A4353 claim actually moves, from order to remittance

The individual rules above make more sense laid out in sequence. Here’s the path a clean A4353 claim actually follows:

1. The treating physician or qualified non-physician practitioner writes a signed, dated SWO naming the product, either by code, general description, or brand and model, along with quantity and diagnosis.
2. Billing staff check the diagnosis against LCD L33803’s covered-diagnosis list and confirm which of the four medical necessity criteria applies.
3. The supplier ships the kit and captures proof of delivery, signed and dated by the beneficiary or an authorised representative.
4. The claim goes out with the correct HCPCS code, A4353 for a non-hydrophilic kit or A4297 for a hydrophilic one, the correct modifier, and units within the MAC’s monthly limit.
5. The MAC adjudicates the claim and may request the SWO or clinical notes before paying, especially on early claims for a new patient.
6. The remittance advice comes back paid, partially paid, or denied. Denials tied to a documentation gap, rather than a coverage exclusion, are usually worth appealing within the MAC’s timely filing window.

Applicable modifiers for HCPCS A4353

Modifier selection for A4353 affects both coverage determination and reimbursement rate. NU and RR, the new-equipment and rental modifiers, don’t apply here since a catheter kit is a single-use supply, not durable equipment. The modifiers that do apply are:

The KX modifier is functionally mandatory at many MACs. A claim submitted without one of KX, GA, GY, or GZ is typically returned or denied for missing information, per LCD L33803 and Policy Article A52521.

Modifier applicability can change when CMS or an individual MAC updates its policy articles, so verify current requirements against your MAC’s billing instructions before submitting. Staff who manage HIPAA-compliant medical office billing should include modifier audits in quarterly coding reviews.

Before you submit an A4353 claim: A quick checklist

Run through this before the claim leaves the building:

• Confirm the kit is non-hydrophilic; hydrophilic kits bill as A4297 for dates of service on or after January 1, 2026
• Confirm the written order is signed, dated before the supply date, and still valid under the new codes if it names a code specifically
• Confirm one of KX, GA, GY, or GZ is on the claim
• Confirm the diagnosis on the claim matches one of the four LCD L33803 criteria and appears in the physician’s notes
• Confirm proof of delivery is signed, dated, and matches the item and quantity billed
• Confirm the monthly quantity billed is within the MAC’s LCD limit

Common billing errors and denial reasons for A4353 claims

A4353 denials cluster around a small set of recurring errors. Identifying them before claim submission is far cheaper than resolving them through the appeals process.

• Hydrophilic kit billed under the old code: Billing a hydrophilic catheter under A4351, A4352, or A4353 for a date of service on or after January 1, 2026. It belongs under A4295, A4296, or A4297 instead.
• Wrong code selection: Billing A4351 or A4352 when the catheter shipped as a closed-system kit with insertion supplies. A4353 (or A4297) should have been billed.
• Missing KX modifier: Many MACs require the KX modifier to confirm coverage criteria are met. Claims submitted without it, or without GA, GY, or GZ where applicable, are returned or denied automatically.
• Quantity limit exceeded: Billing more units per month than the MAC’s LCD allows. Excess units are denied; some MACs flag the supplier for further review.
• Incomplete written order: Orders missing the diagnosis, quantity, or treating physician signature are rejected during pre-payment review.
• Proof of delivery gaps: Missing beneficiary signature, incorrect item description, or undated POD documents trigger post-payment recoupment.
• Non-covered diagnosis: The ICD-10-CM diagnosis on the claim does not appear on the MAC’s LCD covered diagnosis list.

Running the checklist above as an automated pre-submission check, rather than a manual review, is what most high-volume DMEPOS suppliers build into practice management software features that flag missing modifiers or quantity overruns before a claim reaches the payer.

Getting A4353 claims paid correctly the first time

HCPCS code A4353 reads simply enough: an intermittent urinary catheter billed with insertion supplies rather than separately. The complexity is all downstream, matching documentation to LCD L33803’s coverage criteria, applying KX, GA, GY, or GZ correctly, staying inside MAC quantity limits, and keeping the code current now that hydrophilic kits have moved to A4297.

Most practices that get this wrong repeat the same one or two errors on every claim that follows.

Practice management software like Pabau keeps that documentation attached to the claim it belongs to. A client’s SWO, diagnosis, and proof of delivery live in one record instead of three separate files, and Pabau’s claims management software carries that record through to submission.

If you want to see how that fits a catheter program or broader DMEPOS billing workflow, book a demo with the Pabau team.

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