Q0504 HCPCS code: Power adapter for pneumatic ventricular assist device, replacement only, vehicle type
Q0504 is the HCPCS Level II code for power adapter for pneumatic ventricular assist device, replacement only, vehicle type. The 2026 Medicare DMEPOS fee schedule pays $824.68 to $907.15 depending on the state. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 1 per day on outpatient hospital claims. Its average fee ranks 4 of 6 Q05 codes (family range $37.42–$1,593.61).
Code details
| Field | Value |
|---|---|
| Section | Q codes — Temporary codes |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 38 — DMEPOS: orthotics, prosthetics, prosthetic devices and vision services |
| BETOS category | D1F — Prosthetic and orthotic devices |
| Added | 2005-10-01 |
| Last action effective | 2013-01-01 |
2026 Medicare DMEPOS fee schedule for Q0504
| Modifier | Meaning | Lowest state fee | Highest state fee | Ceiling | Floor |
|---|---|---|---|---|---|
| — | base fee | $824.68 | $907.15 | $1,006.65 | $754.99 |
| State | Modifier | Fee | Rural fee |
|---|---|---|---|
| AK | — | $824.68 | — |
| AL | — | $849.48 | — |
| AR | — | $849.41 | — |
| AZ | — | $824.68 | — |
| CA | — | $824.68 | — |
| CO | — | $855.90 | — |
| CT | — | $824.68 | — |
| DC | — | $824.68 | — |
| DE | — | $824.68 | — |
| FL | — | $849.48 | — |
| GA | — | $849.48 | — |
| HI | — | $824.68 | — |
| IA | — | $840.78 | — |
| ID | — | $824.68 | — |
| IL | — | $844.96 | — |
| IN | — | $844.96 | — |
| KS | — | $840.78 | — |
| KY | — | $849.48 | — |
| LA | — | $849.41 | — |
| MA | — | $824.68 | — |
| MD | — | $824.68 | — |
| ME | — | $824.68 | — |
| MI | — | $844.96 | — |
| MN | — | $844.96 | — |
| MO | — | $840.78 | — |
| MS | — | $849.48 | — |
| MT | — | $855.90 | — |
| NC | — | $849.48 | — |
| ND | — | $855.90 | — |
| NE | — | $840.78 | — |
| NH | — | $824.68 | — |
| NJ | — | $824.68 | — |
| NM | — | $849.41 | — |
| NV | — | $824.68 | — |
| NY | — | $824.68 | — |
| OH | — | $844.96 | — |
| OK | — | $849.41 | — |
| OR | — | $824.68 | — |
| PA | — | $824.68 | — |
| PR | — | $907.15 | — |
| RI | — | $824.68 | — |
| SC | — | $849.48 | — |
| SD | — | $855.90 | — |
| TN | — | $849.48 | — |
| TX | — | $849.41 | — |
| UT | — | $855.90 | — |
| VA | — | $824.68 | — |
| VI | — | $907.15 | — |
| VT | — | $824.68 | — |
| WA | — | $824.68 | — |
| WI | — | $844.96 | — |
| WV | — | $824.68 | — |
| WY | — | $855.90 | — |
How the Q0504 fee compares
| Measure | Value |
|---|---|
| Rank among 6 Q05 codes (lowest = 1) | 4 |
| Family fee range (average of state fees) | $37.42–$1,593.61 |
| Rural fee uplift | — |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 1 | Clinical: Data |
| practitioner claims | 1 | Clinical: Data |
What changed for Q0504
- 2026-01-01: Average state fee rose 2.0%: $824.42 to $840.91
- 2005-10-01: Q0504 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code Q0504?
Q0504 is the HCPCS Level II code for power adapter for pneumatic ventricular assist device, replacement only, vehicle type. Short descriptor: "Pwr adpt pneum vad, rep veh".
How much does Medicare pay for Q0504?
Under the 2026 DMEPOS fee schedule, non-rural state fees are base (base fee): $824.68–$907.15. Rural fees can be higher.
Does Medicare cover Q0504?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
Did the Medicare fee for Q0504 change in 2026?
The average non-rural state fee moved from $824.42 in 2025 to $840.91 in 2026 (+2.0%). CMS's next quarterly HCPCS and DMEPOS update takes effect January 1, 2027.
How many units of Q0504 can be billed per day?
1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).
Related Q05 codes
- Q0500 — Filters for use with electric or electric/pneumatic ventricular assist device, replacement only ($36.71–$40.36)
- Q0501 — Shower cover for use with electric or electric/pneumatic ventricular assist device, replacement only ($613.75–$675.13)
- Q0502 — Mobility cart for pneumatic ventricular assist device, replacement only ($781.39–$859.54)
- Q0503 — Battery for pneumatic ventricular assist device, replacement only, each ($1,562.84–$1,719.11)
- Q0506 — Battery, lithium-ion, for use with electric or electric/pneumatic ventricular assist device, replacement only ($1,026.54–$1,129.20)
- Q0507 — Miscellaneous supply or accessory for use with an external ventricular assist device
- Q0508 — Miscellaneous supply or accessory for use with an implanted ventricular assist device
- Q0509 — Miscellaneous supply or accessory for use with any implanted ventricular assist device for which payment was not made under medicare part a
- Q0510 — Pharmacy supply fee for initial immunosuppressive drug(s), first month following transplant
- Q0511 — Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period
- Q0512 — Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period
- Q0513 — Pharmacy dispensing fee for inhalation drug(s); per 30 days
Building a device that would bill under a code like this? Caduvo matches a device description to HCPCS/CPT codes, Medicare coverage and payment, and the FDA pathway in one report.
Next steps
- Run a reimbursement report for a device billed under Q0504
- Watch Q0504 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for Q0504
Sources: CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.