A4373 HCPCS Level II code: Ostomy skin barrier, with flange (solid, flexible or accordion), with built-in convexity, any size, each
A4373 is the HCPCS code for “Ostomy skin barrier, with flange (solid, flexible or accordion), with built-in convexity, any size, each” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A4373Ostomy skin barrier, with flange (solid, flexible or accordion), with built-in convexity, any size, each
Short description: Skin barrier with flange
HCPCS · United States
Medicare details
The indicators CMS publishes with A4373 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Medicare pricing
- DMEPOS fee schedule – Ostomy, tracheostomy and urological supplies (price subject to floors and ceilings)
- Type of service
- Lump sum purchase of DME, prosthetics, orthotics
- BETOS category
- Prosthetic/Orthotic devices
- Added
- Jan 1, 2000
Where A4373 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A4373Ostomy skin barrier, with flange (solid, flexible or accordion), with built-in convexity, any size, each
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 A4373 mean?
A4373 is the HCPCS code for “Ostomy skin barrier, with flange (solid, flexible or accordion), with built-in convexity, any size, each” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A4373?
CMS lists A4373’s Medicare coverage as “Special coverage instructions apply” and its pricing as “DMEPOS fee schedule – Ostomy, tracheostomy and urological supplies (price subject to floors and ceilings)”. 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 A4373
All A codesA4366Ostomy vent, any type, eachA4367Ostomy belt, eachA4368Ostomy filter, any type, eachA4369Ostomy skin barrier, liquid (spray, brush, etc.), per ozA4371Ostomy skin barrier, powder, per ozA4372Ostomy skin barrier, solid 4 x 4 or equivalent, standard wear, with built-in convexity, eachA4375Ostomy pouch, drainable, with faceplate attached, plastic, eachA4376Ostomy pouch, drainable, with faceplate attached, rubber, eachA4377Ostomy pouch, drainable, for use on faceplate, plastic, eachA4378Ostomy pouch, drainable, for use on faceplate, rubber, eachA4379Ostomy pouch, urinary, with faceplate attached, plastic, eachA4380Ostomy pouch, urinary, with faceplate attached, rubber, each