A7046 — Water chamber for humidifier, used with positive airway pressure device, replacement, each
HCPCS Level II A-code · short descriptor: “Repl water chamber, pap dev”
- Code system
- HCPCS Level II
- Family
- A — Medical & surgical supplies, ambulance
- Medicare coverage status
- Special coverage instructions apply
- DMEPOS payment category
- Inexpensive or routinely purchased
- Prior authorization
- Not on Medicare required-PA list
- Status
- Active (April 2026 HCPCS)
Prior authorization
Not on the Medicare required-PA list as of the January 13, 2026 update (74 items). Medicare Advantage and commercial plans set their own prior-authorization rules for this code — verify per plan before delivery.
A7046 Medicare fee schedule (April 2026)
NU — New purchase Inexpensive or routinely purchased
Medicare allowable ranges from $15.83 to $23.57 depending on state and rural status.
| State | Non-rural | Rural |
|---|---|---|
| AK | $21.19 | — |
| AL | $17.01 | $21.23 |
| AR | $17.01 | $21.23 |
| AZ | $16.26 | $21.23 |
| CA | $16.73 | $21.23 |
| CO | $16.89 | $21.23 |
| CT | $16.66 | $21.23 |
| DC | $15.83 | $21.23 |
| DE | $15.83 | $21.23 |
| FL | $17.01 | $21.23 |
| GA | $17.01 | $21.23 |
| HI | $21.19 | — |
| IA | $16.96 | $21.23 |
| ID | $16.89 | $21.23 |
| IL | $17.20 | $21.23 |
| IN | $17.20 | $21.23 |
| KS | $16.96 | $21.23 |
| KY | $17.01 | $21.23 |
| LA | $17.01 | $21.23 |
| MA | $16.66 | $21.23 |
| MD | $15.83 | $21.23 |
| ME | $16.66 | $21.23 |
| MI | $17.20 | $21.23 |
| MN | $16.96 | $21.23 |
| MO | $16.96 | $21.23 |
| MS | $17.01 | $21.23 |
| MT | $16.89 | $21.23 |
| NC | $17.01 | $21.23 |
| ND | $16.96 | $21.23 |
| NE | $16.96 | $21.23 |
| NH | $16.66 | $21.23 |
| NJ | $15.83 | $21.23 |
| NM | $16.26 | $21.23 |
| NV | $16.73 | $21.23 |
| NY | $15.83 | $21.23 |
| OH | $17.20 | $21.23 |
| OK | $16.26 | $21.23 |
| OR | $16.73 | $21.23 |
| PA | $15.83 | $21.23 |
| PR | $23.57 | — |
| RI | $16.66 | $21.23 |
| SC | $17.01 | $21.23 |
| SD | $16.96 | $21.23 |
| TN | $17.01 | $21.23 |
| TX | $16.26 | $21.23 |
| UT | $16.89 | $21.23 |
| VA | $17.01 | $21.23 |
| VI | $21.19 | — |
| VT | $16.66 | $21.23 |
| WA | $16.73 | $21.23 |
| WI | $17.20 | $21.23 |
| WV | $17.01 | $21.23 |
| WY | $16.89 | $21.23 |
Amounts are the Medicare DMEPOS fee-schedule allowables effective April 2026.
Medicare typically pays 80% of the allowable after the Part B deductible; the patient owes 20%.
A 2% sequestration reduction applies to the Medicare share. Former competitive-bidding-area
adjustments and non-continental rates can differ — verify with your DME MAC.
Common denial codes to watch
Related A-codes
Bill A7046 with confidence
MyMedi-AI scrubs whole claims against NCCI pairs, MUE limits, modifier rules, and PA flags before you submit — built for DME teams, no PHI stored on our servers.
Start free trial Run a CMS-0057-F readiness checkPrefer DIY compliance? Self-audit documentation kits for DME suppliers →