A4627 — Spacer, bag or reservoir, with or without mask, for use with metered dose inhaler
A4627 is a HCPCS Level II code for spacer, bag or reservoir, with or without mask, for use with metered dose inhaler. It belongs to the Transportation, Medical & Surgical Supplies, Administrative section. Medicare does not pay it — see the coverage note below before you bill it.
Medicare coverage: Non-covered by Medicare
Medicare does not cover the item or service this code describes.
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 statusN
Non-covered service. Medicare does not cover 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 A4627 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
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS 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 A4627
- Long descriptor
- Spacer, bag or reservoir, with or without mask, for use with metered dose inhaler
- Short descriptor
- Spacer bag/reservoir
- Added
- January 1, 1991
- BETOS
- D1A
- Pricing indicator
- 00 — Not priced by Part B
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.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to A4627
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If A4627 is not quite right, the correct code is very often within a few positions of it.
- A4617Mouth piece
- A4618Breathing circuits
- A4619Face tent
- A4620Variable concentration mask
- A4623Tracheostomy, inner cannula
- A4624Tracheal suction catheter, any type other than closed system, each
- A4625Tracheostomy care kit for new tracheostomy
- A4626Tracheostomy cleaning brush, each
- A4628Oral and/or oropharyngeal suction catheter, each
- A4629Tracheostomy care kit for established tracheostomy
- A4630Replacement batteries, medically necessary, transcutaneous electrical stimulator, owned by patient
- A4633Replacement bulb/lamp for ultraviolet light therapy system, each
- A4634Replacement bulb for therapeutic light box, tabletop model
- A4635Underarm pad, crutch, replacement, each
- A4636Replacement, handgrip, cane, crutch, or walker, each
- A4637Replacement, tip, cane, crutch, walker, each.
Questions about A4627
What is HCPCS code A4627?
A4627 is a HCPCS Level II code for spacer, bag or reservoir, with or without mask, for use with metered dose inhaler. It sits in the Transportation, Medical & Surgical Supplies, Administrative section.
Does Medicare cover A4627?
The CMS HCPCS file marks A4627 as "Non-covered by Medicare". Medicare does not cover the item or service this code describes.
How is A4627 paid under the physician fee schedule?
A4627 carries PFS status code N. Non-covered service. Medicare does not cover it.