A4364 — Adhesive, liquid or equal, any type, per oz
A4364 is a HCPCS Level II code for adhesive, liquid or equal, any type, per oz. It belongs to the Transportation, Medical & Surgical Supplies, Administrative section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Special coverage instructions apply
There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusP
Bundled or excluded. No RVUs and no payment: either bundled into another service or paid under a different provision of the Act.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of A4364 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 2 units MAI 3 — Date of Service Edit: Clinical · Clinical: Data
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for A4364
- Long descriptor
- Adhesive, liquid or equal, any type, per oz
- Short descriptor
- Adhesive, liquid or equal
- Added
- January 1, 1985
- BETOS
- D1F
- Pricing indicator
- 37 — DMEPOS
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Ostomy, tracheostomy and urological supplies. Price subject to floors and ceilings.
Codes adjacent to A4364
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If A4364 is not quite right, the correct code is very often within a few positions of it.
- A4355Irrigation tubing set for continuous bladder irrigation through a three-way indwelling foley catheter, each
- A4356External urethral clamp or compression device (not to be used for catheter clamp), each
- A4357Bedside drainage bag, day or night, with or without anti-reflux device, with or without tube, each
- A4358Urinary drainage bag, leg or abdomen, vinyl, with or without tube, with straps, each
- A4360Disposable external urethral clamp or compression device, with pad and/or pouch, each
- A4361Ostomy faceplate, each
- A4362Skin barrier; solid, 4 x 4 or equivalent; each
- A4363Ostomy clamp, any type, replacement only, each
- A4366Ostomy vent, any type, each
- A4367Ostomy belt, each
- A4368Ostomy filter, any type, each
- A4369Ostomy skin barrier, liquid (spray, brush, etc.), per oz
- A4371Ostomy skin barrier, powder, per oz
- A4372Ostomy skin barrier, solid 4 x 4 or equivalent, standard wear, with built-in convexity, each
- A4373Ostomy skin barrier, with flange (solid, flexible or accordion), with built-in convexity, any size, each
- A4375Ostomy pouch, drainable, with faceplate attached, plastic, each
Questions about A4364
What is HCPCS code A4364?
A4364 is a HCPCS Level II code for adhesive, liquid or equal, any type, per oz. It sits in the Transportation, Medical & Surgical Supplies, Administrative section.
Does Medicare cover A4364?
The CMS HCPCS file marks A4364 as "Special coverage instructions apply". There are published conditions attached to this code. Check the applicable coverage policy before billing it: the code being valid is not the same as the service being covered.
How is A4364 paid under the physician fee schedule?
A4364 carries PFS status code P. Bundled or excluded. No RVUs and no payment: either bundled into another service or paid under a different provision of the Act.