HCPCS code E0162 – Sitz bath chair

Key takeaways

HCPCS Code E0162 covers a sitz bath chair. E0160 and E0161 cover portable basins, and only E0161 includes a faucet attachment.

Medicare Part B covers E0162 under the DMEPOS benefit when medical necessity is documented and a written physician order is on file.

Medicare ties sitz bath coverage to an infection or injury of the perineal area, treated as part of a planned regimen at home.

Modifier KX is required when the medical necessity criteria for the claim are met and documented.

Pabau, the practice management platform we build, scrubs each E0162 claim for missing or invalid details before it reaches the payer.

HCPCS Code E0162: Official descriptor and key attributes

HCPCS Code E0162 is the HCPCS Level II code for a sitz bath chair, and the official CMS long descriptor reads simply “Sitz bath chair.” It describes a chair-style unit the patient sits in, rather than a basin placed over a toilet or commode.

The Centers for Medicare and Medicaid Services (CMS) maintains this code within the E-series of the HCPCS Level II code system.

That series covers durable medical equipment, prosthetics, orthotics, and supplies (DMEPOS). E0162 is an active code in the current CMS annual HCPCS file. Its E-series neighbors are listed in our HCPCS code index.

The chair design is what separates E0162 from its neighbors. E0160 and E0161 both describe portable basins, and the only difference between those two is the faucet attachment on E0161. Physicians order all three for warm soaks after anal or perineal surgery, episiotomy repair, or hemorrhoid treatment.

Billing DMEPOS items follows different rules from professional or facility billing. E0162 claims go to the relevant DME Medicare Administrative Contractor (DME MAC) for your jurisdiction, not to the standard Part A/B MAC.

E0162 vs E0160 vs E0161: Choosing the correct code

Three HCPCS codes cover sitz baths, and picking the wrong one is a common coding error on these claims. Two questions settle it. Is the device a basin or a chair? If it is a basin, does it come with a faucet attachment?

The physician order or clinical notes should name the device the patient needs. If the order says “sitz bath chair,” E0162 is the code. A portable basin that sits over a toilet or commode is E0160, or E0161 when it ships with faucet tubing. The decision runs in this order:

Medicare coverage and reimbursement for E0162

Medicare Part B covers E0162 under the DMEPOS benefit when the order supports medical necessity. Medicare’s Durable Medical Equipment Reference List (NCD 280.1) covers a sitz bath when the prescription ties it to a perineal infection or injury. The item must also be part of a planned treatment regimen in the patient’s home.

Coverage is not automatic. The supplier must verify that the patient’s condition, as documented by the treating physician, qualifies before dispensing the chair. Check your DME MAC’s current policy articles as well, since contractors can add their own billing instructions.

Reimbursement is based on the CMS DMEPOS fee schedule, which publishes national and regional rates updated each January. On that schedule, E0162 falls in the inexpensive or routinely purchased (IRP) payment category. That category lets the supplier bill a new purchase, a used purchase, or a monthly rental.

HCPCS Code E0162 is not on the current DMEPOS Required Prior Authorization List, so the claim needs no prior authorization. CMS revises that list periodically, so confirm it against the current year’s version.

Maintaining medical billing compliance means rechecking coverage rules each year instead of relying on last year’s assumptions.

Documentation requirements for E0162 claims

Documentation is where most E0162 claims fail audits rather than at initial submission. CMS and DME MACs require the supplier to obtain and retain specific records before billing. A clean claim submission depends on having complete documentation in the supplier file before the claim goes out.

Required documentation typically includes:

• Written physician order: Signed by the treating physician and dated on or before the date of dispensing. It names the device as a sitz bath chair and states the medical indication.
• Medical necessity justification: Clinical notes showing the patient’s condition. Common examples are post-surgical perineal wounds and hemorrhoids that need therapeutic soaking. Medicare’s sitz bath criterion is an infection or injury of the perineal area, so the note should name it.
• Proof of delivery: Supplier delivery receipt signed by the beneficiary or their authorized representative, confirming receipt of the specific device billed.
• Supplier records: Device model number, serial number (if applicable), and dispensing date. CMS supplier standards require the file to be kept for at least seven years.

Most DME MAC jurisdictions do not require a Certificate of Medical Necessity (CMN) for E0162. Check your DME MAC’s current guidance all the same. A missing signed written order is one of the most frequent audit findings on low-cost DMEPOS items.

ICD-10 codes that support an E0162 claim

The diagnosis on the claim has to explain why the patient needs a sitz bath chair. A payer reads the ICD-10-CM code first, and a mismatch there can end the claim before anyone opens the documentation. The codes below commonly support a sitz bath order.

List only diagnoses the physician documented in the chart, at the level of detail the note supports. Adding a code to improve the odds of payment is fraud.

A valid diagnosis also has to match the perineal infection or injury criterion before the claim qualifies. For a postpartum patient, check the coding notes for O87.2 before you pair it with E0162.

Modifiers used with HCPCS Code E0162

HCPCS Code E0162 claims typically require at least one modifier to indicate transaction type and medical necessity status. Using the wrong modifier, or omitting a required one, generates an automatic denial from the DME MAC.

Modifier 99 is a placeholder modifier that signals to the payer that additional modifiers are listed in the claim remarks or elsewhere.

Applying Modifier 99 when only one or two modifiers are needed creates unnecessary confusion in claim processing and may trigger a review request. Use it only when the claim genuinely requires three or more modifiers at once.

Common denial reasons for E0162 and how to prevent them

E0162 denials cluster around a predictable set of causes. Knowing them before submission is the fastest way to improve first-pass acceptance rates.

• Wrong code selected: Billing E0162 for a portable basin, or E0160 or E0161 for a chair-style unit. Verify the physical device matches the code descriptor before billing.
• Medical necessity not supported: Clinical documentation does not establish why the patient requires therapeutic soaking at home. The physician note must connect the diagnosis to the device’s therapeutic function.
• Missing written order: No signed physician order in the supplier file at the time of dispensing. Retroactive orders are not acceptable under CMS supplier standards.
• KX modifier omitted: On Medicare claims where LCD criteria are met, failing to append KX triggers an automatic denial. The payer reads its absence as the supplier acknowledging that criteria are not met.
• Proof of delivery absent: Delivery receipt not obtained or not retained. CMS post-payment audits (RAC, CERT) routinely request delivery documentation for DMEPOS items.

Practices and suppliers with a high volume of DME claims should track denial patterns by code. Good denial management strategies show whether E0162 denials come from missing documentation, code selection errors, or modifier issues.

How to submit an E0162 claim: Step-by-step

E0162 claims follow the standard DME MAC submission workflow. Each step below has a documentation checkpoint, and skipping one raises the odds of a denial.

1. Obtain the written physician order. The order must be dated before dispensing, signed by the treating physician, and must describe the device (a sitz bath chair) and the clinical indication. Verbal orders must be converted to a written order before billing.
2. Verify Medicare eligibility and benefit. Confirm the beneficiary is enrolled in Part B and that the supplier holds a valid Medicare DMEPOS supplier number. Check that the device has not already been billed for this beneficiary within any frequency limit. Use the AAPC HCPCS code lookup to verify the current E0162 descriptor before submission.
3. Confirm medical necessity documentation. Gather the treating physician’s clinical notes that support the diagnosis and the therapeutic rationale for a sitz bath chair. Ensure they meet the NCD 280.1 criterion and any current DME MAC guidance.
4. Dispense the device and obtain proof of delivery. The beneficiary or their authorized representative signs the delivery receipt, which includes the device description, date, and HCPCS Code E0162. Retain this in the supplier file.
5. Select the correct modifiers. At minimum, append NU, RR, or UE (transaction type) and KX (if LCD criteria are met). If the claim might be denied and an ABN is on file, add GA. Avoid Modifier 99 unless three or more modifiers are genuinely required.
6. Submit to the DME MAC. File a CMS-1500 (or 837P electronic equivalent) to the beneficiary’s DME MAC jurisdiction.
7. Monitor the remittance advice. Review the 835 electronic remittance advice (ERA) or paper remittance for claim adjustment reason codes on E0162 lines. CO-16 flags missing information or documentation, and CO-4 flags a modifier that does not fit the code, such as a missing KX. CO-22 means another payer may be primary, so check coordination of benefits before you resubmit.

How claims management software prevents E0162 denials

When E0162 paperwork is tracked by hand across dozens of monthly claims, delivery receipts and written orders go missing. The denial shows up weeks later on the remittance, long after anyone remembers the delivery.

Pabau’s claims management software scrubs every claim for missing or invalid details before it leaves the platform. A claim missing a required field is flagged with the specific error, so your biller fixes it before the DME MAC ever sees it. US claims go out as CMS-1500 claims through Claim.MD to thousands of payers.

After submission, Pabau tracks every claim through the same stages, from pending to paid, with live counts on one dashboard. Electronic remittance advice files settle against each claim, so a denied E0162 line shows up as soon as the file posts. You spend the week resubmitting a handful of flagged claims instead of auditing the whole DME batch.

Reduce DME billing denials before they happen

Pabau scrubs every claim for missing or invalid details before submission, then tracks it from pending to paid. Your E0162 claims reach the DME MAC complete.

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Conclusion

HCPCS Code E0162 is a straightforward DME code for a sitz bath chair, and its denials rarely come from coverage disputes. They come from missing paperwork and from confusing the chair with the basins billed as E0160 and E0161.

Settle the code at the point of dispensing and keep a written order and proof of delivery in every supplier file. Most E0162 claims then pay on first submission.

Many billing teams manage DMEPOS alongside clinical scheduling and patient records. A platform that connects documentation to claim submission removes the manual handoff where errors usually creep in. Book a demo to see how Pabau’s billing workflows handle DME documentation requirements end to end.

Continue your research

Submitting clean claims every time? Clean claim submission outlines the nine fields payers check first and how to prevent technical rejections before they become denials.

Want to understand DMEPOS billing in context? Medical billing workflows explained covers how DME, professional, and facility claims differ and what each requires from the billing team.

Supplying other bathroom DME? HCPCS code E0240 walks through billing a bath or shower chair, a separate bathroom code outside the sitz bath family.

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