A4394 HCPCS code: Ostomy deodorant, with or without lubricant, for use in ostomy pouch, per fluid ounce
A4394 is the HCPCS Level II code for ostomy deodorant, with or without lubricant, for use in ostomy pouch, per fluid ounce. The 2026 Medicare DMEPOS fee schedule pays $3.69 to $4.01 depending on the state. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 1 per day on outpatient hospital claims. Medicare volume fell 3% from 2022 to 2024 (2,337,408 to 2,266,036 services). In 2024, 1,063 suppliers billed Medicare for A4394 (purchases), serving 33,922 beneficiaries; California, New York, Florida accounted for 20% of services. Its average fee ranks 13 of 68 A43 codes (family range $0.05–$878.06).
Code details
| Field | Value |
|---|---|
| Section | A codes — Transportation, medical/surgical supplies and miscellaneous |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 37 — DMEPOS: ostomy, tracheostomy and urological supplies |
| BETOS category | D1F — Prosthetic and orthotic devices |
| Added | 2000-01-01 |
| Last action effective | 2007-01-01 |
2026 Medicare DMEPOS fee schedule for A4394
| Modifier | Meaning | Lowest state fee | Highest state fee | Ceiling | Floor |
|---|---|---|---|---|---|
| — | base fee | $3.69 | $4.01 | $3.69 | $3.14 |
| State | Modifier | Fee | Rural fee |
|---|---|---|---|
| AK | — | $3.73 | — |
| AL | — | $3.69 | — |
| AR | — | $3.69 | — |
| AZ | — | $3.69 | — |
| CA | — | $3.69 | — |
| CO | — | $3.69 | — |
| CT | — | $3.69 | — |
| DC | — | $3.69 | — |
| DE | — | $3.69 | — |
| FL | — | $3.69 | — |
| GA | — | $3.69 | — |
| HI | — | $3.94 | — |
| IA | — | $3.69 | — |
| ID | — | $3.69 | — |
| IL | — | $3.69 | — |
| IN | — | $3.69 | — |
| KS | — | $3.69 | — |
| KY | — | $3.69 | — |
| LA | — | $3.69 | — |
| MA | — | $3.69 | — |
| MD | — | $3.69 | — |
| ME | — | $3.69 | — |
| MI | — | $3.69 | — |
| MN | — | $3.69 | — |
| MO | — | $3.69 | — |
| MS | — | $3.69 | — |
| MT | — | $3.69 | — |
| NC | — | $3.69 | — |
| ND | — | $3.69 | — |
| NE | — | $3.69 | — |
| NH | — | $3.69 | — |
| NJ | — | $3.69 | — |
| NM | — | $3.69 | — |
| NV | — | $3.69 | — |
| NY | — | $3.69 | — |
| OH | — | $3.69 | — |
| OK | — | $3.69 | — |
| OR | — | $3.69 | — |
| PA | — | $3.69 | — |
| PR | — | $4.01 | — |
| RI | — | $3.69 | — |
| SC | — | $3.69 | — |
| SD | — | $3.69 | — |
| TN | — | $3.69 | — |
| TX | — | $3.69 | — |
| UT | — | $3.69 | — |
| VA | — | $3.69 | — |
| VI | — | $3.69 | — |
| VT | — | $3.69 | — |
| WA | — | $3.69 | — |
| WI | — | $3.69 | — |
| WV | — | $3.69 | — |
| WY | — | $3.69 | — |
How the A4394 fee compares
| Measure | Value |
|---|---|
| Rank among 68 A43 codes (lowest = 1) | 13 |
| Family fee range (average of state fees) | $0.05–$878.06 |
| Rural fee uplift | — |
Who bills A4394 (2024)
| Measure | Value |
|---|---|
| Suppliers billing rentals | — |
| Suppliers billing purchases | 1,063 |
| Referring clinicians | 25,287 |
| Medicare beneficiaries | 33,922 |
| States with claims | 53 |
| Share of services in top 3 states (California, New York, Florida) | 20% |
| Year | Suppliers | Beneficiaries |
|---|---|---|
| 2022 | 1,118 | 35,529 |
| 2023 | 1,108 | 34,673 |
| 2024 | 1,063 | 33,922 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for A4394, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 2,337,408 | 35,529 | $3.15 | $2.39 |
| 2023 | 2,312,641 | 34,673 | $3.42 | $2.58 |
| 2024 | 2,266,036 | 33,922 | $3.51 | $2.65 |
States with the most A4394 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| California | 184,895 | $2.68 |
| New York | 136,301 | $2.68 |
| Florida | 134,345 | $2.64 |
| Texas | 132,475 | $2.64 |
| Illinois | 101,334 | $2.63 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 1 | Clinical: CMS Workgroup |
| practitioner claims | 1 | Clinical: CMS Workgroup |
What changed for A4394
- 2026-01-01: Average state fee rose 1.9%: $3.63 to $3.70
- 2000-01-01: A4394 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code A4394?
A4394 is the HCPCS Level II code for ostomy deodorant, with or without lubricant, for use in ostomy pouch, per fluid ounce. Short descriptor: "Ostomy pouch liq deodorant".
How much does Medicare pay for A4394?
Under the 2026 DMEPOS fee schedule, non-rural state fees are base (base fee): $3.69–$4.01. Rural fees can be higher.
Does Medicare cover A4394?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
Did the Medicare fee for A4394 change in 2026?
The average non-rural state fee moved from $3.63 in 2025 to $3.70 in 2026 (+1.9%). CMS's next quarterly HCPCS and DMEPOS update takes effect January 1, 2027.
How many units of A4394 can be billed per day?
1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).
Related A43 codes
- A4300 — Implantable access catheter, (e.g., venous, arterial, epidural subarachnoid, or peritoneal, etc.) external access
- A4301 — Implantable access total catheter, port/reservoir (e.g., venous, arterial, epidural, subarachnoid, peritoneal, etc.)
- A4305 — Disposable drug delivery system, flow rate of 50 ml or greater per hour
- A4306 — Disposable drug delivery system, flow rate of less than 50 ml per hour
- A4310 — Insertion tray without drainage bag and without catheter (accessories only) ($9.36–$25.22)
- A4311 — Insertion tray without drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.) ($16.05–$28.00)
- A4312 — Insertion tray without drainage bag with indwelling catheter, foley type, two-way, all silicone ($21.85–$36.59)
- A4313 — Insertion tray without drainage bag with indwelling catheter, foley type, three-way, for continuous irrigation ($22.44–$40.49)
- A4314 — Insertion tray with drainage bag with indwelling catheter, foley type, two-way latex with coating (teflon, silicone, silicone elastomer or hydrophilic, etc.) ($30.63–$41.77)
- A4315 — Insertion tray with drainage bag with indwelling catheter, foley type, two-way, all silicone ($31.95–$48.37)
- A4316 — Insertion tray with drainage bag with indwelling catheter, foley type, three-way, for continuous irrigation ($34.40–$48.37)
- A4320 — Irrigation tray with bulb or piston syringe, any purpose ($6.34–$8.42)
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under A4394
- Watch A4394 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for A4394
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule 2026; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.