A6550 — Wound care set, for negative pressure wound therapy electrical pump, includes all supplies and accessories
A6550 is a HCPCS Level II code for wound care set, for negative pressure wound therapy electrical pump, includes all supplies and accessories. It belongs to the Transportation, Medical & Surgical Supplies, Administrative section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
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 statusX
Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.
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 A6550 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
- 1 unit MAI 3 — Date of Service Edit: Clinical · Clinical: CMS Workgroup
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 A6550
- Long descriptor
- Wound care set, for negative pressure wound therapy electrical pump, includes all supplies and accessories
- Short descriptor
- Neg pres wound ther drsg set
- Added
- January 1, 2004
- BETOS
- D1E
- Pricing indicator
- 34 — 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.
DME supplies. Price subject to floors and ceilings.
Codes adjacent to A6550
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If A6550 is not quite right, the correct code is very often within a few positions of it.
- A6538Gradient compression stocking, full length/chap style, 40 mmhg or greater, each
- A6539Gradient compression stocking, waist length, 18-30 mmhg, each
- A6540Gradient compression stocking, waist length, 30-40 mmhg, each
- A6541Gradient compression stocking, waist length, 40 mmhg or greater, each
- A6544Gradient compression stocking, garter belt
- A6545Gradient compression wrap, non-elastic, below knee, 30-50 mmhg, used as a surgical dressing, each
- A6548Accessory to custom gradient compression garment, silicone band, any size
- A6549Gradient compression garment, not otherwise specified, for daytime use, each
- A6552Gradient compression stocking, below knee, 30-40 mmhg, each
- A6553Gradient compression stocking, below knee, 30-40 mmhg, custom, each
- A6554Gradient compression stocking, below knee, 40 mmhg or greater, each
- A6555Gradient compression stocking, below knee, 40 mmhg or greater, custom, each
- A6556Gradient compression stocking, thigh length, 18-30 mmhg, custom, each
- A6557Gradient compression stocking, thigh length, 30-40 mmhg, custom, each
- A6558Gradient compression stocking, thigh length, 40 mmhg or greater, custom, each
- A6559Gradient compression stocking, full length/chap style, 18-30 mmhg, custom, each
Questions about A6550
What is HCPCS code A6550?
A6550 is a HCPCS Level II code for wound care set, for negative pressure wound therapy electrical pump, includes all supplies and accessories. It sits in the Transportation, Medical & Surgical Supplies, Administrative section.
Does Medicare cover A6550?
The CMS HCPCS file marks A6550 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is A6550 paid under the physician fee schedule?
A6550 carries PFS status code X. Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.