G0400 HCPCS Level II code: Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels
G0400 is the HCPCS code for “Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G0400Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels
Short description: Home sleep test/type 4 porta
HCPCS · United States
Medicare details
The indicators CMS publishes with G0400 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Physician fee schedule – Price established by carriers (e.g., not otherwise classified, individual determination, carrier discretion)
- Type of service
- Diagnostic laboratory
- BETOS category
- Other tests - other
- Added
- Mar 13, 2008
Where G0400 sits
- 1G codesProcedures and professional services
- 2Active code G0400Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels
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 G0400 mean?
G0400 is the HCPCS code for “Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G0400?
CMS lists G0400’s Medicare coverage as “Carrier judgment” and its pricing as “Physician fee schedule – Price established by carriers (e.g., not otherwise classified, individual determination, carrier discretion)”. 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 G0400
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