K0738 HCPCS code: Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing
K0738 is the HCPCS Level II code for portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing. The 2026 Medicare DMEPOS fee schedule pays $46.28 to $88.58 (RR, rental (monthly)) 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. Its average fee ranks 2 of 3 K07 codes billed RR (family range $3.65–$245.69); rural fees run 48% higher.
Code details
| Field | Value |
|---|---|
| Section | K codes — Temporary codes for DME MACs |
| Coverage code | C — Carrier judgment |
| Pricing indicator | 33 — DMEPOS: oxygen and oxygen equipment |
| BETOS category | D1C — Oxygen and supplies |
| Added | 2006-10-01 |
| Last action effective | 2006-10-01 |
2026 Medicare DMEPOS fee schedule for K0738
| Modifier | Meaning | Lowest state fee | Highest state fee | Ceiling | Floor |
|---|---|---|---|---|---|
| RR | rental (monthly) | $46.28 | $88.58 | — | — |
| State | Modifier | Fee | Rural fee |
|---|---|---|---|
| AK | RR | $88.58 | — |
| AL | RR | $50.11 | $88.58 |
| AR | RR | $50.11 | $88.58 |
| AZ | RR | $49.08 | $88.58 |
| CA | RR | $48.20 | $88.58 |
| CO | RR | $50.70 | $88.58 |
| CT | RR | $50.81 | $88.58 |
| DC | RR | $49.59 | $88.58 |
| DE | RR | $49.59 | $88.58 |
| FL | RR | $50.11 | $88.58 |
| GA | RR | $50.11 | $88.58 |
| HI | RR | $88.58 | — |
| IA | RR | $50.08 | $88.58 |
| ID | RR | $50.70 | $88.58 |
| IL | RR | $49.66 | $88.58 |
| IN | RR | $49.66 | $88.58 |
| KS | RR | $50.08 | $88.58 |
| KY | RR | $50.11 | $88.58 |
| LA | RR | $50.11 | $88.58 |
| MA | RR | $50.81 | $88.58 |
| MD | RR | $49.59 | $88.58 |
| ME | RR | $50.81 | $88.58 |
| MI | RR | $49.66 | $88.58 |
| MN | RR | $50.08 | $88.58 |
| MO | RR | $50.08 | $88.58 |
| MS | RR | $50.11 | $88.58 |
| MT | RR | $50.70 | $88.58 |
| NC | RR | $50.11 | $88.58 |
| ND | RR | $50.08 | $88.58 |
| NE | RR | $50.08 | $88.58 |
| NH | RR | $50.81 | $88.58 |
| NJ | RR | $49.59 | $88.58 |
| NM | RR | $49.08 | $88.58 |
| NV | RR | $48.20 | $88.58 |
| NY | RR | $49.59 | $88.58 |
| OH | RR | $49.66 | $88.58 |
| OK | RR | $49.08 | $88.58 |
| OR | RR | $48.20 | $88.58 |
| PA | RR | $49.59 | $88.58 |
| PR | RR | $88.58 | — |
| RI | RR | $50.81 | $88.58 |
| SC | RR | $50.11 | $88.58 |
| SD | RR | $50.08 | $88.58 |
| TN | RR | $50.11 | $88.58 |
| TX | RR | $49.08 | $88.58 |
| UT | RR | $50.70 | $88.58 |
| VA | RR | $50.11 | $88.58 |
| VI | RR | $88.58 | — |
| VT | RR | $50.81 | $88.58 |
| WA | RR | $48.20 | $88.58 |
| WI | RR | $49.66 | $88.58 |
| WV | RR | $50.11 | $88.58 |
| WY | RR | $50.70 | $88.58 |
How the K0738 fee compares
| Measure | Value |
|---|---|
| Rank among 3 K07 codes billed RR (lowest = 1) | 2 |
| Family fee range (average of state fees) | $3.65–$245.69 |
| Rural fee uplift | 47.9% |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| DME suppliers | 1 | Code Descriptor / CPT Instruction |
What changed for K0738
- 2026-01-01: Average state fee (RR) rose 2.6%: $50.25 to $51.55
- 2006-10-01: K0738 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 K0738?
K0738 is the HCPCS Level II code for portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing. Short descriptor: "Portable gas oxygen system".
How much does Medicare pay for K0738?
Under the 2026 DMEPOS fee schedule, non-rural state fees are RR (rental (monthly)): $46.28–$88.58. Rural fees can be higher.
Does Medicare cover K0738?
Coverage code C — Carrier judgment. Coverage is decided by the Medicare contractor (MAC) case by case.
Did the Medicare fee for K0738 change in 2026?
The average non-rural state fee for RR moved from $50.25 in 2025 to $51.55 in 2026 (+2.6%). CMS's next quarterly HCPCS and DMEPOS update takes effect January 1, 2027.
How many units of K0738 can be billed per day?
1 on DME suppliers (NCCI medically unlikely edits).
Related K07 codes
- K0730 — Controlled dose inhalation drug delivery system ($245.69–$245.69)
- K0733 — Power wheelchair accessory, 12 to 24 amp hour sealed lead acid battery, each (e.g., gel cell, absorbed glassmat) ($3.25–$44.63)
- K0739 — Repair or nonroutine service for durable medical equipment other than oxygen equipment requiring the skill of a technician, labor component, per 15 minutes ($20.11–$37.86)
- K0740 — Repair or nonroutine service for oxygen equipment requiring the skill of a technician, labor component, per 15 minutes
- K0743 — Suction pump, home model, portable, for use on wounds
- K0744 — Absorptive wound dressing for use with suction pump, home model, portable, pad size 16 square inches or less
- K0745 — Absorptive wound dressing for use with suction pump, home model, portable, pad size more than 16 square inches but less than or equal to 48 square inches
- K0746 — Absorptive wound dressing for use with suction pump, home model, portable, pad size greater than 48 square inches
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Next steps
- Run a reimbursement report for a device billed under K0738
- Watch K0738 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for K0738
Sources: CMS HCPCS Level II release October 2025; 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.