E1406 HCPCS code: Oxygen and water vapor enriching system without heated delivery
E1406 is the HCPCS Level II code for oxygen and water vapor enriching system without heated delivery. The 2026 Medicare DMEPOS fee schedule pays $100.65 to $192.59 (RR, rental (monthly)) 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 DME suppliers.
Code details
| Field | Value |
|---|---|
| Section | E codes — Durable medical equipment |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 33 — DMEPOS: oxygen and oxygen equipment |
| BETOS category | D1C — Oxygen and supplies |
| Added | 1988-01-01 |
| Last action effective | 1990-01-01 |
2026 Medicare DMEPOS fee schedule for E1406
| Modifier | Meaning | Lowest state fee | Highest state fee | Ceiling | Floor |
|---|---|---|---|---|---|
| RR | rental (monthly) | $100.65 | $192.59 | — | — |
| State | Modifier | Fee | Rural fee |
|---|---|---|---|
| AK | RR | $192.59 | — |
| AL | RR | $107.57 | $192.59 |
| AR | RR | $107.57 | $192.59 |
| AZ | RR | $105.31 | $192.59 |
| CA | RR | $100.65 | $192.59 |
| CO | RR | $108.28 | $192.59 |
| CT | RR | $107.01 | $192.59 |
| DC | RR | $103.13 | $192.59 |
| DE | RR | $103.13 | $192.59 |
| FL | RR | $107.57 | $192.59 |
| GA | RR | $107.57 | $192.59 |
| HI | RR | $192.59 | — |
| IA | RR | $107.51 | $192.59 |
| ID | RR | $108.28 | $192.59 |
| IL | RR | $107.02 | $192.59 |
| IN | RR | $107.02 | $192.59 |
| KS | RR | $107.51 | $192.59 |
| KY | RR | $107.57 | $192.59 |
| LA | RR | $107.57 | $192.59 |
| MA | RR | $107.01 | $192.59 |
| MD | RR | $103.13 | $192.59 |
| ME | RR | $107.01 | $192.59 |
| MI | RR | $107.02 | $192.59 |
| MN | RR | $107.51 | $192.59 |
| MO | RR | $107.51 | $192.59 |
| MS | RR | $107.57 | $192.59 |
| MT | RR | $108.28 | $192.59 |
| NC | RR | $107.57 | $192.59 |
| ND | RR | $107.51 | $192.59 |
| NE | RR | $107.51 | $192.59 |
| NH | RR | $107.01 | $192.59 |
| NJ | RR | $103.13 | $192.59 |
| NM | RR | $105.31 | $192.59 |
| NV | RR | $100.65 | $192.59 |
| NY | RR | $103.13 | $192.59 |
| OH | RR | $107.02 | $192.59 |
| OK | RR | $105.31 | $192.59 |
| OR | RR | $100.65 | $192.59 |
| PA | RR | $103.13 | $192.59 |
| PR | RR | $192.18 | — |
| RI | RR | $107.01 | $192.59 |
| SC | RR | $107.57 | $192.59 |
| SD | RR | $107.51 | $192.59 |
| TN | RR | $107.57 | $192.59 |
| TX | RR | $105.31 | $192.59 |
| UT | RR | $108.28 | $192.59 |
| VA | RR | $107.57 | $192.59 |
| VI | RR | $192.59 | — |
| VT | RR | $107.01 | $192.59 |
| WA | RR | $100.65 | $192.59 |
| WI | RR | $107.02 | $192.59 |
| WV | RR | $107.57 | $192.59 |
| WY | RR | $108.28 | $192.59 |
How the E1406 fee compares
| Measure | Value |
|---|---|
| Rank among 2 E14 codes billed RR (lowest = 1) | 1 |
| Family fee range (average of state fees) | $112.73–$141.72 |
| Rural fee uplift | 70.8% |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| DME suppliers | 1 | Code Descriptor / CPT Instruction |
Medicare policy articles for this code
- A52514: Oxygen and Oxygen Equipment - Policy Article (CGS Administrators, LLC (DME MAC) Noridian Healthcare Solutions, LLC (DME MAC)) — mentions this code in its coding guidance
What changed for E1406
- 2026-01-01: Average state fee (RR) rose 2.6%: $109.83 to $112.73
- 1988-01-01: E1406 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 E1406?
E1406 is the HCPCS Level II code for oxygen and water vapor enriching system without heated delivery. Short descriptor: "O2/water vapor enrich w/o he".
How much does Medicare pay for E1406?
Under the 2026 DMEPOS fee schedule, non-rural state fees are RR (rental (monthly)): $100.65–$192.59. Rural fees can be higher.
Does Medicare cover E1406?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
Did the Medicare fee for E1406 change in 2026?
The average non-rural state fee for RR moved from $109.83 in 2025 to $112.73 in 2026 (+2.6%). CMS's next quarterly HCPCS and DMEPOS update takes effect January 1, 2027.
How many units of E1406 can be billed per day?
1 on DME suppliers (NCCI medically unlikely edits).
Related E14 codes
- E1405 — Oxygen and water vapor enriching system with heated delivery ($129.15–$237.92)
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Next steps
- Run a reimbursement report for a device billed under E1406
- Watch E1406 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for E1406
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.