G0399 HCPCS Level II code: Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen…
G0399 is the HCPCS code for “Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
G0399Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation
Short description: Home sleep test/type 3 porta
HCPCS · United States
Medicare details
The indicators CMS publishes with G0399 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 G0399 sits
- 1G codesProcedures and professional services
- 2Active code G0399Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation
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 G0399 mean?
G0399 is the HCPCS code for “Home sleep test (hst) with type iii portable monitor, unattended; minimum of 4 channels: 2 respiratory movement/airflow, 1 ecg/heart rate and 1 oxygen saturation” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover G0399?
CMS lists G0399’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.
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