Q0477 — Power module patient cable for use with electric or electric/pneumatic ventricular assist device, replacement only
Q0477 is a HCPCS Level II code for power module patient cable for use with electric or electric/pneumatic ventricular assist device, replacement only. It belongs to the Temporary Codes 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 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 Q0477 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
- 1 unit MAI 1 — Line Edit · Nature of Equipment
- outpatient
- 1 unit MAI 1 — Line Edit · Nature of Equipment
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 Q0477
- Long descriptor
- Power module patient cable for use with electric or electric/pneumatic ventricular assist device, replacement only
- Short descriptor
- Pwr module pt cable lvad rpl
- Added
- January 1, 2018
- BETOS
- D1F
- Pricing indicator
- 38 — 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.
Orthotics, prosthetics, prosthetic devices and vision services. Price subject to floors and ceilings.
Codes adjacent to Q0477
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If Q0477 is not quite right, the correct code is very often within a few positions of it.
- Q0238Injection, tocilizumab-aazg, for hospitalized adult patients with covid-19 who are receiving systemic corticosteroids and require supplemental oxygen, non-invasive or invasive mechanical ventilation, or extracorporeal membrane oxygenation (ecmo) only, 1 mg
- Q0239Injection, bamlanivimab-xxxx, 700 mgterminated
- Q0240Injection, casirivimab and imdevimab, 600 mgterminated
- Q0243Injection, casirivimab and imdevimab, 2400 mgterminated
- Q0244Injection, casirivimab and imdevimab, 1200 mgterminated
- Q0245Injection, bamlanivimab and etesevimab, 2100 mgterminated
- Q0247Injection, sotrovimab, 500 mgterminated
- Q0249Injection, tocilizumab, for hospitalized adults and pediatric patients (2 years of age and older) with covid-19 who are receiving systemic corticosteroids and require supplemental oxygen, non-invasive or invasive mechanical ventilation, or extracorporeal membrane oxygenation (ecmo) only, 1 mg
- Q0478Power adapter for use with electric or electric/pneumatic ventricular assist device, vehicle type
- Q0479Power module for use with electric or electric/pneumatic ventricular assist device, replacement only
- Q0480Driver for use with pneumatic ventricular assist device, replacement only
- Q0481Microprocessor control unit for use with electric ventricular assist device, replacement only
- Q0482Microprocessor control unit for use with electric/pneumatic combination ventricular assist device, replacement only
- Q0483Monitor/display module for use with electric ventricular assist device, replacement only
- Q0484Monitor/display module for use with electric or electric/pneumatic ventricular assist device, replacement only
- Q0485Monitor control cable for use with electric ventricular assist device, replacement only
Questions about Q0477
What is HCPCS code Q0477?
Q0477 is a HCPCS Level II code for power module patient cable for use with electric or electric/pneumatic ventricular assist device, replacement only. It sits in the Temporary Codes section.
Does Medicare cover Q0477?
The CMS HCPCS file marks Q0477 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 Q0477 paid under the physician fee schedule?
Q0477 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.