A4421 HCPCS Level II code: Ostomy supply; miscellaneous
A4421 is the HCPCS code for “Ostomy supply; miscellaneous” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A4421Ostomy supply; miscellaneous
Short description: Ostomy supply misc
HCPCS · United States
Medicare details
The indicators CMS publishes with A4421 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- DMEPOS fee schedule – Carrier priced (e.g., not otherwise classified, individual determination, carrier discretion, gap-filled amounts)
- Type of service
- Lump sum purchase of DME, prosthetics, orthotics
- BETOS category
- Prosthetic/Orthotic devices
- Added
- Jan 1, 1985
Where A4421 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A4421Ostomy supply; miscellaneous
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code A4421 mean?
A4421 is the HCPCS code for “Ostomy supply; miscellaneous” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A4421?
CMS lists A4421’s Medicare coverage as “Carrier judgment” and its pricing as “DMEPOS fee schedule – Carrier priced (e.g., not otherwise classified, individual determination, carrier discretion, gap-filled amounts)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside A4421
All A codesA4415Ostomy skin barrier, with flange (solid, flexible or accordion), without built-in convexity, larger than 4 x 4 inches, eachA4416Ostomy pouch, closed, with barrier attached, with filter (1 piece), eachA4417Ostomy pouch, closed, with barrier attached, with built-in convexity, with filter (1 piece), eachA4418Ostomy pouch, closed; without barrier attached, with filter (1 piece), eachA4419Ostomy pouch, closed; for use on barrier with non-locking flange, with filter (2 piece), eachA4420Ostomy pouch, closed; for use on barrier with locking flange (2 piece), eachA4422Ostomy absorbent material (sheet/pad/crystal packet) for use in ostomy pouch to thicken liquid stomal output, eachA4423Ostomy pouch, closed; for use on barrier with locking flange, with filter (2 piece), eachA4424Ostomy pouch, drainable, with barrier attached, with filter (1 piece), eachA4425Ostomy pouch, drainable; for use on barrier with non-locking flange, with filter (2 piece system), eachA4426Ostomy pouch, drainable; for use on barrier with locking flange (2 piece system), eachA4427Ostomy pouch, drainable; for use on barrier with locking flange, with filter (2 piece system), each