A7037 HCPCS code: Tubing used with positive airway pressure device
A7037 is the HCPCS Level II code for tubing used with positive airway pressure device. The 2026 Medicare DMEPOS fee schedule pays $14.19 to $36.48 (NU, new equipment, purchased) depending on the state. Its Medicare coverage code is C (Carrier judgment): Coverage is decided by the Medicare contractor (MAC) case by case. The NCCI unit limit is 1 per day on DME suppliers. Medicare volume fell 15% from 2022 to 2024 (1,490,600 to 1,268,722 services). In 2024, 4,359 suppliers billed Medicare for A7037 (purchases), serving 567,258 beneficiaries; Florida, Texas, California accounted for 22% of services. Its average fee ranks 18 of 37 A70 codes billed NU (family range $0.71–$172.96); rural fees run 104% higher.
Code details
| Field | Value |
|---|---|
| Section | A codes — Transportation, medical/surgical supplies and miscellaneous |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 32 — DMEPOS: inexpensive or routinely purchased item |
| BETOS category | D1E — Other durable medical equipment |
| Added | 2003-01-01 |
| Last action effective | 2003-01-01 |
2026 Medicare DMEPOS fee schedule for A7037
| Modifier | Meaning | Lowest state fee | Highest state fee | Ceiling | Floor |
|---|---|---|---|---|---|
| NU | new equipment, purchased | $14.19 | $36.48 | — | — |
| State | Modifier | Fee | Rural fee |
|---|---|---|---|
| AK | NU | $30.43 | — |
| AL | NU | $14.77 | $33.51 |
| AR | NU | $14.77 | $33.27 |
| AZ | NU | $14.74 | $33.51 |
| CA | NU | $15.64 | $33.51 |
| CO | NU | $15.58 | $33.40 |
| CT | NU | $15.46 | $33.51 |
| DC | NU | $14.93 | $33.43 |
| DE | NU | $14.93 | $32.40 |
| FL | NU | $14.77 | $31.86 |
| GA | NU | $14.77 | $32.82 |
| HI | NU | $31.97 | — |
| IA | NU | $14.19 | $33.51 |
| ID | NU | $15.58 | $33.51 |
| IL | NU | $14.90 | $33.43 |
| IN | NU | $14.90 | $33.51 |
| KS | NU | $14.19 | $33.51 |
| KY | NU | $14.77 | $33.05 |
| LA | NU | $14.77 | $33.51 |
| MA | NU | $15.46 | $33.51 |
| MD | NU | $14.93 | $33.43 |
| ME | NU | $15.46 | $33.51 |
| MI | NU | $14.90 | $33.51 |
| MN | NU | $14.19 | $33.51 |
| MO | NU | $14.19 | $33.51 |
| MS | NU | $14.77 | $33.27 |
| MT | NU | $15.58 | $33.51 |
| NC | NU | $14.77 | $32.57 |
| ND | NU | $14.19 | $33.51 |
| NE | NU | $14.19 | $33.51 |
| NH | NU | $15.46 | $32.40 |
| NJ | NU | $14.93 | $32.40 |
| NM | NU | $14.74 | $33.16 |
| NV | NU | $15.64 | $33.51 |
| NY | NU | $14.93 | $32.40 |
| OH | NU | $14.90 | $33.43 |
| OK | NU | $14.74 | $33.11 |
| OR | NU | $15.64 | $33.51 |
| PA | NU | $14.93 | $32.40 |
| PR | NU | $36.48 | — |
| RI | NU | $15.46 | $32.40 |
| SC | NU | $14.77 | $33.05 |
| SD | NU | $14.19 | $33.51 |
| TN | NU | $14.77 | $33.51 |
| TX | NU | $14.74 | $31.86 |
| UT | NU | $15.58 | $33.51 |
| VA | NU | $14.77 | $33.43 |
| VI | NU | $32.31 | — |
| VT | NU | $15.46 | $33.36 |
| WA | NU | $15.64 | $33.51 |
| WI | NU | $14.90 | $33.51 |
| WV | NU | $14.77 | $33.43 |
| WY | NU | $15.58 | $33.51 |
How the A7037 fee compares
| Measure | Value |
|---|---|
| Rank among 37 A70 codes billed NU (lowest = 1) | 18 |
| Family fee range (average of state fees) | $0.71–$172.96 |
| Rural fee uplift | 103.7% |
Who bills A7037 (2024)
| Measure | Value |
|---|---|
| Suppliers billing rentals | — |
| Suppliers billing purchases | 4,359 |
| Referring clinicians | 101,607 |
| Medicare beneficiaries | 567,258 |
| States with claims | 59 |
| Share of services in top 3 states (Florida, Texas, California) | 22% |
| Year | Suppliers | Beneficiaries |
|---|---|---|
| 2022 | 4,553 | 720,910 |
| 2023 | 4,449 | 638,831 |
| 2024 | 4,359 | 567,258 |
Counts only. Supplier and clinician names, contact lists and state-by-state detail are in Caduvo.
Medicare utilization for A7037, 2022–2024
| Year | Services | Beneficiaries | Avg. allowed | Avg. paid |
|---|---|---|---|---|
| 2022 | 1,490,600 | 720,910 | $18.89 | $14.03 |
| 2023 | 1,381,641 | 638,831 | $20.54 | $15.32 |
| 2024 | 1,268,722 | 567,258 | $18.96 | $14.08 |
States with the most A7037 services (2024)
| State | Services | Avg. paid |
|---|---|---|
| Florida | 114,207 | $12.06 |
| Texas | 92,732 | $13.41 |
| California | 71,509 | $12.37 |
| Pennsylvania | 54,705 | $13.34 |
| New York | 52,409 | $13.23 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| DME suppliers | 1 | Published Contractor Policy |
What changed for A7037
- 2026-01-01: Average state fee (NU) rose 2.6%: $15.88 to $16.30
- 2003-01-01: A7037 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 A7037?
A7037 is the HCPCS Level II code for tubing used with positive airway pressure device. Short descriptor: "Pos airway pressure tubing".
How much does Medicare pay for A7037?
Under the 2026 DMEPOS fee schedule, non-rural state fees are NU (new equipment, purchased): $14.19–$36.48. Rural fees can be higher.
Does Medicare cover A7037?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Did the Medicare fee for A7037 change in 2026?
The average non-rural state fee for NU moved from $15.88 in 2025 to $16.30 in 2026 (+2.6%). CMS's next quarterly HCPCS and DMEPOS update takes effect January 1, 2027.
How many units of A7037 can be billed per day?
1 on DME suppliers (NCCI medically unlikely edits).
Related A70 codes
- A7000 — Canister, disposable, used with suction pump, each ($9.24–$13.39)
- A7001 — Canister, non-disposable, used with suction pump, each ($40.06–$47.58)
- A7002 — Tubing, used with suction pump, each ($3.87–$5.47)
- A7003 — Administration set, with small volume nonfiltered pneumatic nebulizer, disposable ($1.86–$3.26)
- A7004 — Small volume nonfiltered pneumatic nebulizer, disposable ($1.51–$2.08)
- A7005 — Administration set, with small volume nonfiltered pneumatic nebulizer, non-disposable ($11.77–$29.20)
- A7006 — Administration set, with small volume filtered pneumatic nebulizer ($8.19–$14.94)
- A7007 — Large volume nebulizer, disposable, unfilled, used with aerosol compressor ($3.47–$5.87)
- A7008 — Large volume nebulizer, disposable, prefilled, used with aerosol compressor ($12.46–$18.09)
- A7009 — Reservoir bottle, non-disposable, used with large volume ultrasonic nebulizer ($54.00–$66.77)
- A7010 — Corrugated tubing, disposable, used with large volume nebulizer, 100 feet ($17.61–$27.19)
- A7011 — Corrugated tubing, non-disposable, used with large volume nebulizer, 10 feet
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 A7037
- Watch A7037 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for A7037
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.