E0666 — Non-segmental pneumatic appliance for use with pneumatic compressor, half leg
E0666 is a HCPCS Level II code for non-segmental pneumatic appliance for use with pneumatic compressor, half leg. It belongs to the Durable Medical Equipment 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.
Medically Unlikely Edits — units per day
The most units of E0666 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
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- DME supplier
- 2 units MAI 2 — Date of Service Edit: Policy · Anatomic Consideration
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 E0666
- Long descriptor
- Non-segmental pneumatic appliance for use with pneumatic compressor, half leg
- Short descriptor
- Pneumatic appliance half leg
- Added
- January 1, 1986
- BETOS
- D1E
- Pricing indicator
- 32 — 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.
Inexpensive and routinely purchased DME. Price subject to floors and ceilings.
Codes adjacent to E0666
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If E0666 is not quite right, the correct code is very often within a few positions of it.
- E0652Pneumatic compressor, segmental home model with calibrated gradient pressure
- E0655Non-segmental pneumatic appliance for use with pneumatic compressor, half arm
- E0656Segmental pneumatic appliance for use with pneumatic compressor, trunk
- E0657Segmental pneumatic appliance for use with pneumatic compressor, chest
- E0658Segmental pneumatic appliance for use with pneumatic compressor, integrated, 2 full arms and chest
- E0659Segmental pneumatic appliance for use with pneumatic compressor, integrated, head, neck and chest
- E0660Non-segmental pneumatic appliance for use with pneumatic compressor, full leg
- E0665Non-segmental pneumatic appliance for use with pneumatic compressor, full arm
- E0667Segmental pneumatic appliance for use with pneumatic compressor, full leg
- E0668Segmental pneumatic appliance for use with pneumatic compressor, full arm
- E0669Segmental pneumatic appliance for use with pneumatic compressor, half leg
- E0670Segmental pneumatic appliance for use with pneumatic compressor, integrated, 2 full legs and trunk
- E0671Segmental gradient pressure pneumatic appliance, full leg
- E0672Segmental gradient pressure pneumatic appliance, full arm
- E0673Segmental gradient pressure pneumatic appliance, half leg
- E0675Pneumatic compression device, high pressure, rapid inflation/deflation cycle, for arterial insufficiency (unilateral or bilateral system)
Questions about E0666
What is HCPCS code E0666?
E0666 is a HCPCS Level II code for non-segmental pneumatic appliance for use with pneumatic compressor, half leg. It sits in the Durable Medical Equipment section.
Does Medicare cover E0666?
The CMS HCPCS file marks E0666 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.