A4620 HCPCS Level II code: Variable concentration mask
A4620 is the HCPCS code for “Variable concentration mask” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
A4620Variable concentration mask
HCPCS · United States
Medicare details
The indicators CMS publishes with A4620 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Special coverage instructions apply
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Lump sum purchase of DME, prosthetics, orthotics
- BETOS category
- Oxygen and supplies
- Added
- Jan 1, 1990
Where A4620 sits
- 1A codesAmbulance, supplies and miscellaneous
- 2Active code A4620Variable concentration mask
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code A4620 mean?
A4620 is the HCPCS code for “Variable concentration mask” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover A4620?
CMS lists A4620’s Medicare coverage as “Special coverage instructions apply” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside A4620
All A codesA4614Peak expiratory flow rate meter, hand heldA4615Cannula, nasalA4616Tubing (oxygen), per footA4617Mouth pieceA4618Breathing circuitsA4619Face tentA4623Tracheostomy, inner cannulaA4624Tracheal suction catheter, any type other than closed system, eachA4625Tracheostomy care kit for new tracheostomyA4626Tracheostomy cleaning brush, eachA4627Spacer, bag or reservoir, with or without mask, for use with metered dose inhalerA4628Oral and/or oropharyngeal suction catheter, each