HCPCS code H0022: Alcohol and drug intervention billing guide
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Last Updated: July 30, 2026
Key takeaways
HCPCS code A4726 is the CMS descriptor for dialysate solution used in home peritoneal dialysis, in fluid volumes greater than 5,999 cc.
A4726 sits in the A4000-A9999 supply range, billed mainly under Medicare Part B’s ESRD benefit.
A4726 carries CMS Pricing Indicator 00, so Medicare doesn’t price it separately.
It also sits on the ESRD PPS Consolidated Billing list, bundled into the facility’s per-treatment payment.
Pabau’s claims management software validates HCPCS supply-code fields, gates claims before they go out, and gives billing teams a live status dashboard.
HCPCS code A4726 covers dialysate solution used in home peritoneal dialysis (PD), a home-based alternative to in-facility hemodialysis. It sits on Medicare’s ESRD Prospective Payment System (PPS) Consolidated Billing list, so it’s bundled rather than paid on its own.
Billing teams often expect a separate allowed amount, the way a typical DME supply code pays out. That mismatch is one of the most common sources of denials for this code. Checking the code’s bundled status before assuming stand-alone reimbursement applies saves a rejected claim down the line.
How A4726 fits into the HCPCS Level II system
A4726 is a Level II HCPCS code administered by the Centers for Medicare and Medicaid Services (CMS).
Level II codes use an alpha-numeric format: one letter followed by four digits. They cover products, supplies, and services that CPT codes don’t capture, including durable medical equipment (DME), orthotic devices, and medical and surgical supplies. The A-series (A0000-A9999) covers ambulance services, medical and surgical supplies, and dialysis-related accessories.
A4726 sits within the A4000-A9999 supply range, which covers dialysis-specific consumables tied to end-stage renal disease (ESRD) treatment. Its CMS long descriptor is fixed: “Dialysate solution, any concentration of dextrose, fluid volume greater than 5999 cc, for peritoneal dialysis.”
That wording identifies the PD fluid itself, not a hemodialysis-facility supply or a piece of DME. You can confirm it against the current Alpha-Numeric HCPCS file on CMS’s HCPCS General Information page.
Billers should treat A4726 as a home PD consumable. It normally sits inside the ESRD facility’s bundled PPS payment, not as an independently priced DME supply.
The code is not a procedure code and does not describe a clinical service. It should not appear on CMS-1500 claims for physician services rendered during a dialysis session.
Two CMS designations explain why. A4726 carries Pricing Indicator “00” (Medicare Part B doesn’t separately price it) and Type of Service code “L” (ESRD supplies). It also appears on CMS’s ESRD PPS Consolidated Billing list.
Known as Attachment B, that list normally folds A4726 into the facility’s per-treatment PPS base-rate payment instead of a stand-alone claim line.
A4726’s core attributes, at a glance
The table below summarizes A4726’s key structural attributes, based on CMS’s current HCPCS Level II descriptor and billing designations.
Because A4726 is bundled rather than separately priced, billing teams sometimes only discover its Consolidated Billing status after a claim is rejected.
Practices that rely on claims management software can flag a code like A4726 for a documentation and field-validation check before submission. That way, its bundled status gets confirmed early rather than after a denial.
Does Medicare cover HCPCS code A4726?
Yes. Home PD dialysate solution is covered under Medicare Part B through the ESRD benefit. That’s outlined in Chapter 11 of the CMS Medicare Benefit Policy Manual. For A4726 though, coverage isn’t a separate allowed-amount decision.
The item is normally bundled into the ESRD facility’s per-treatment PPS base-rate payment. What matters is whether it’s captured correctly within that bundle, not whether it pays out as a stand-alone claim.
A4726 carries CMS Pricing Indicator “00.” That means Medicare Part B doesn’t set a separate allowed amount for it, the way it does for locality-priced DME codes.
Rather than looking up a per-unit rate, confirm the item’s inclusion in the ESRD facility’s bundled PPS payment. The DMEPOS fee schedule and the ESRD PPS pricing files on cms.gov cover this.
Practices billing dialysis supplies should keep documentation that clearly ties each supply item to the beneficiary’s ESRD diagnosis and treatment plan. Incomplete medical necessity documentation is one of the most common reasons ESRD claims get flagged for adjustment.
Reviewing practice management software features can help teams keep this documentation organized and consistent. For a broader view of keeping patient information secure through this process, see patient data security tools for DME billing environments.
How do you bill A4726 correctly?
Most billing teams won’t submit A4726 as a stand-alone DME claim, because it sits on CMS’s ESRD PPS Consolidated Billing list. The steps below show how the code gets documented and tracked for a home PD patient. They don’t cover pricing it as an independently reimbursed supply.
- Confirm ESRD enrollment and home PD status. Verify that the beneficiary is enrolled in Medicare’s ESRD program and using peritoneal dialysis at home rather than in-facility hemodialysis.
- Obtain a physician order that specifies dextrose concentration and volume. The treating physician or authorized prescriber must document the dialysate concentration and the fluid volume ordered, since A4726 applies only above 5,999 cc. Undated or unsigned orders are among the top reasons audits flag a claim.
- Note the place of service without expecting it to price the claim. Home PD is generally reported with POS 12 (home) rather than POS 65 (ESRD facility). For A4726, this identifies where care happened. It doesn’t trigger a separate fee-schedule payment.
- Confirm the ESRD facility’s billing arrangement covers the supply. Home PD dialysate is normally included in the facility’s bundled per-treatment PPS payment. Confirm the item is captured there rather than assuming it generates its own allowed amount.
- Skip rental and new-equipment modifiers. RR (rental) and NU (new equipment) don’t fit a single-use dialysate solution. Applying them won’t change how the bundled payment gets calculated.
- Retain documentation for audit readiness. ESRD supply claims carry a higher-than-average audit rate. Keep the physician order, delivery confirmation, and medical necessity documentation. Retain any prior authorization correspondence too, for the statutory retention period, typically a minimum of seven years for Medicare claims.
Practices using digital forms for intake and order capture can automate much of the documentation chain above. That reduces the risk of unsigned orders or missing required fields reaching the billing team.
Which modifiers apply to A4726 claims?
A4726 is a bundled, single-use dialysate fluid rather than independently priced DME, so only some of the modifiers common to A-series supply codes apply. The table below lists the modifiers relevant to A4726.
RR (rental) and NU (new equipment) are common DME modifiers, but neither fits A4726. Dialysate solution is a single-use fluid, not rented or newly purchased equipment. Applying them doesn’t change reimbursement, since A4726 is normally bundled into the ESRD facility’s PPS payment rather than priced as a stand-alone DME line.
Documentation that should accompany every A4726 claim includes the signed physician order, proof of delivery (if applicable), and the beneficiary’s ESRD program enrollment confirmation. Also include any prior authorization documentation required under the facility’s ESRD PPS billing arrangement.
Teams that standardize this through medical forms and documentation requirements workflows reduce turnaround time significantly when audits or additional documentation requests arrive. Maintaining paperless and HIPAA-compliant documentation processes also supports the audit trail Medicare expects.
The coding errors that trigger most A4726 denials
A4726 sits within a code series that causes more than its share of DME claim denials. Most errors fall into a handful of predictable categories.
- Confusing the volume threshold with a unit count. A4726 applies specifically to fluid volumes over 5,999 cc. Billing it against a different threshold, or as a generic per-box unit, misrepresents the product actually delivered.
- Missing or expired physician orders. Orders must be dated, signed, and current at the time of supply delivery. An order that was valid six months ago does not automatically cover ongoing monthly supply claims unless it specifies the full coverage period.
- Billing A4726 as an independent DME claim. The code sits on the ESRD PPS Consolidated Billing list. Submitting it as a stand-alone claim outside the facility’s bundled arrangement is treated as improper unbundling, not a standard fee-schedule submission.
- Omitting the KX modifier when required. Many payers still expect the KX modifier on dialysis supply documentation to attest that medical necessity is on file. A missing KX modifier can generate a denial that then requires an appeal with supporting documentation.
- Treating A4726 as occasionally bundled rather than always bundled. A4726’s place on the ESRD PPS Consolidated Billing list (Attachment B) is a standing designation, not a periodic one. It’s folded into the ESRD facility’s per-treatment PPS base-rate payment for the vast majority of home PD patients. Billing it separately outside that arrangement is a billing error, not a payer choice.
Specialty practices can reduce these errors with compliance management software that controls access, logs an audit trail, and keeps documentation organized. That combination catches a missing order before it reaches the payer.
Pro Tip
Run a quarterly audit of your ESRD supply claims. Pull any line where A4726 was billed as a stand-alone DME claim instead of being folded into the facility’s bundled PPS payment. A recurring pattern usually means a workflow still treats this bundled home PD supply as separately billable. Fixing it prevents CO-97 (benefit included in another payment) denials rather than chasing a reimbursement that was never separately payable in the first place.
Which HCPCS codes come up alongside A4726?
Billers working with A4726 frequently encounter adjacent codes in the same A-series dialysis supply range. The table below lists commonly referenced related codes, drawn from the AAPC HCPCS Level II code lookup. Always verify each code’s current status and coverage against the applicable DME MAC LCD before billing.
When billing multiple A-series codes on the same claim, check for bundling edits between them, including A4726’s standing Consolidated Billing status.
CMS’s National Correct Coding Initiative (NCCI) edits separately flag supply-code pairs that are mutually exclusive or bundled into one another. This same bundling confusion shows up well beyond dialysis. Metabolic health practices and IV therapy providers often fold a supply item into a package payment the same way ESRD does.
How is HCPCS different from CPT coding?
HCPCS Level II codes and CPT codes serve different purposes and are governed by different bodies. Billers new to DME and supply coding often confuse the two. Understanding the distinction prevents misrouting claims and helps practices apply the right code when both systems appear to cover a similar item.
Consider a practical example. During a dialysis session, the physician bills a CPT evaluation and management code for that clinical service. The dialysis facility or supplier may separately bill a HCPCS A-series code for the supply consumed.
Bundled items like A4726 are the exception and don’t generate their own claim line. Mixing a physician’s CPT claim with a facility’s supply claim on the same form causes processing errors. PGM Billing’s free HCPCS lookup tool, built on CMS data, offers a search interface for verifying code descriptions across both systems before billing.
How Pabau helps billing teams manage codes like A4726
Billing teams tracking A4726 today often lean on a shared spreadsheet or a manual checklist. It’s how they confirm a supply code’s bundled status before it reaches a claim.
That works fine until someone’s on leave, a step gets skipped, or a new hire doesn’t know the ESRD Consolidated Billing rules yet. Practice management software like Pabau replaces that manual check with a built-in one.
Pabau’s claims management tools validate insurer-submission fields for HCPCS supply codes and gate a claim before it goes out. Billing teams also get a live status dashboard instead of a shared spreadsheet.
That means a code like A4726 gets checked against its bundled status before submission, not after a denial lands. Billing teams spend less time chasing rejected claims and more time on the work that grows the practice.
Simplify dialysis and DME supply billing with Pabau
Pabau's claims management tools validate insurer-submission fields for HCPCS supply codes, gate claims before they go out, and give billing teams a live status dashboard.
Conclusion
Dialysis supply billing carries financial and compliance risk, and A4726 sits right in the middle of it. It looks like a standard DME code. Billing it that way is exactly what trips most claims up.
Treating it as separately payable, instead of bundled into the facility’s PPS payment, drives most of the denials tied to this code. The fix isn’t complicated. Confirm the bundle before you submit, not after a claim comes back.
Getting that check right, every time, protects a claim before it becomes a denial. Book a demo to see how Pabau helps billing teams catch a bundling error like this before it reaches the payer.
Continue your research
Need another dialysis supply code to check? A4706 covers bicarbonate concentrate for hemodialysis and follows the same consolidated-billing pattern.
Billing a different DME item this week? E0117 walks through the modifiers and documentation a spring-assisted crutch claim needs.
Working with an introducer or sheath code? C1894 covers the billing rules for non-laser introducer and sheath devices.
Thinking about remote monitoring for home PD patients? Telemedicine software compares six platforms built for clinical use.
Need to explain a bundled claim to a patient? Patient communication covers the skills and tools that keep billing conversations clear.
Frequently asked questions
What is HCPCS code A4726 used for?
HCPCS code A4726 covers dialysate solution used in home peritoneal dialysis, in fluid volumes over 5,999 cc. CMS bundles it into the ESRD facility’s per-treatment PPS payment rather than pricing it on its own.
Is HCPCS code A4726 covered by Medicare?
Yes, Medicare Part B covers it under the ESRD benefit, but not as a separate line item. Its Pricing Indicator “00” means it’s paid through the facility’s bundled PPS rate instead of its own allowed amount.
Does a patient owe coinsurance for A4726?
Not directly. Since A4726 is folded into the ESRD facility’s bundled PPS payment, standard Part B coinsurance applies to that bundled payment as a whole. It doesn’t apply to the dialysate solution as a separate charge.
What is the difference between HCPCS and CPT codes?
CPT codes are five-digit codes the AMA maintains for physician procedures. HCPCS Level II codes use a letter plus four digits, and CMS maintains them for DME, supplies, and items CPT doesn’t cover.
