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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
Face-to-face & WOPD
Not on the required 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.

Order readiness — what the written order must contain

Every Medicare DMEPOS claim needs a Standard Written Order with all six elements (42 CFR 410.38(d)):

  • Beneficiary name or Medicare Beneficiary Identifier (MBI) (42 CFR 410.38(d)(1)(i)(A))
  • General description of the item (42 CFR 410.38(d)(1)(i)(B))
  • Quantity to be dispensed, if applicable (42 CFR 410.38(d)(1)(i)(C))
  • Order date (42 CFR 410.38(d)(1)(i)(D))
  • Treating practitioner name or NPI (42 CFR 410.38(d)(1)(i)(E))
  • Treating practitioner signature (42 CFR 410.38(d)(1)(i)(F))

Not on the F2F/WOPD list (April 13, 2026 update — 83 items). The standard written order must reach the supplier before claim submission.

Blank requirements checklist only — MyMedi-AI never collects or stores completed orders.

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

StateNon-ruralRural
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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