A4408 — Ostomy skin barrier, with flange (solid, flexible or accordion), extended wear, with built-in convexity, larger than 4 x 4 inches, each
HCPCS Level II A-code · short descriptor: “Ext wear ost skn barr >4sq"”
- Code system
- HCPCS Level II
- Family
- A — Medical & surgical supplies, ambulance
- Medicare coverage status
- Special coverage instructions apply
- DMEPOS payment category
- Ostomy, tracheostomy & urological supplies
- Prior authorization
- Not on Medicare required-PA list
- Status
- Active (April 2026 HCPCS)
Prior authorization
Not on the Medicare required-PA list as of the January 13, 2026 update (74 items). Medicare Advantage and commercial plans set their own prior-authorization rules for this code — verify per plan before delivery.
A4408 Medicare fee schedule (April 2026)
Base (no modifier) Ostomy, tracheostomy & urological supplies
Medicare allowable ranges from $14.07 to $16.87 depending on state and rural status.
Former-CBA payment limits: ceiling $14.07 · floor $11.96
| State | Non-rural | Rural |
|---|---|---|
| AK | $14.07 | — |
| AL | $14.07 | — |
| AR | $14.07 | — |
| AZ | $14.07 | — |
| CA | $14.07 | — |
| CO | $14.07 | — |
| CT | $14.07 | — |
| DC | $14.07 | — |
| DE | $14.07 | — |
| FL | $14.07 | — |
| GA | $14.07 | — |
| HI | $14.07 | — |
| IA | $14.07 | — |
| ID | $14.07 | — |
| IL | $14.07 | — |
| IN | $14.07 | — |
| KS | $14.07 | — |
| KY | $14.07 | — |
| LA | $14.07 | — |
| MA | $14.07 | — |
| MD | $14.07 | — |
| ME | $14.07 | — |
| MI | $14.07 | — |
| MN | $14.07 | — |
| MO | $14.07 | — |
| MS | $14.07 | — |
| MT | $14.07 | — |
| NC | $14.07 | — |
| ND | $14.07 | — |
| NE | $14.07 | — |
| NH | $14.07 | — |
| NJ | $14.07 | — |
| NM | $14.07 | — |
| NV | $14.07 | — |
| NY | $14.07 | — |
| OH | $14.07 | — |
| OK | $14.07 | — |
| OR | $14.07 | — |
| PA | $14.07 | — |
| PR | $16.87 | — |
| RI | $14.07 | — |
| SC | $14.07 | — |
| SD | $14.07 | — |
| TN | $14.07 | — |
| TX | $14.07 | — |
| UT | $14.07 | — |
| VA | $14.07 | — |
| VI | $14.07 | — |
| VT | $14.07 | — |
| WA | $14.07 | — |
| WI | $14.07 | — |
| WV | $14.07 | — |
| WY | $14.07 | — |
Amounts are the Medicare DMEPOS fee-schedule allowables effective April 2026.
Medicare typically pays 80% of the allowable after the Part B deductible; the patient owes 20%.
A 2% sequestration reduction applies to the Medicare share. Former competitive-bidding-area
adjustments and non-continental rates can differ — verify with your DME MAC.
Common denial codes to watch
Related A-codes
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