A7034 — Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap
A7034 is a HCPCS Level II code for nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap. It belongs to the Transportation, Medical & Surgical Supplies, Administrative section. Whether Medicare pays it depends on the coverage rule below.
Medicare coverage: Carrier judgment
Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusX
Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of A7034 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- DME supplier
- 1 unit MAI 2 — Date of Service Edit: Policy · Published Contractor Policy
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for A7034
- Long descriptor
- Nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap
- Short descriptor
- Nasal application device
- Added
- January 1, 2003
- BETOS
- D1E
- Pricing indicator
- 32 — DMEPOS
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Inexpensive and routinely purchased DME. Price subject to floors and ceilings.
Codes adjacent to A7034
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If A7034 is not quite right, the correct code is very often within a few positions of it.
- A7026High frequency chest wall oscillation system hose, replacement for use with patient owned equipment, each
- A7027Combination oral/nasal mask, used with continuous positive airway pressure device, each
- A7028Oral cushion for combination oral/nasal mask, replacement only, each
- A7029Nasal pillows for combination oral/nasal mask, replacement only, pair
- A7030Full face mask used with positive airway pressure device, each
- A7031Face mask interface, replacement for full face mask, each
- A7032Cushion for use on nasal mask interface, replacement only, each
- A7033Pillow for use on nasal cannula type interface, replacement only, pair
- A7035Headgear used with positive airway pressure device
- A7036Chinstrap used with positive airway pressure device
- A7037Tubing used with positive airway pressure device
- A7038Filter, disposable, used with positive airway pressure device
- A7039Filter, non disposable, used with positive airway pressure device
- A7040One way chest drain valve
- A7041Water seal drainage container and tubing for use with implanted chest tube
- A7042Implanted pleural catheter, eachterminated
Questions about A7034
What is HCPCS code A7034?
A7034 is a HCPCS Level II code for nasal interface (mask or cannula type) used with positive airway pressure device, with or without head strap. It sits in the Transportation, Medical & Surgical Supplies, Administrative section.
Does Medicare cover A7034?
The CMS HCPCS file marks A7034 as "Carrier judgment". Coverage is decided by your Medicare contractor, not by national policy. Whether this is paid depends on the LCD for your jurisdiction and on what the documentation supports.
How is A7034 paid under the physician fee schedule?
A7034 carries PFS status code X. Statutory exclusion. The item or service is not within the statutory definition of 'physician services', so the fee schedule never pays it.