G0399 – 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

HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)

Active code Carrier judgment

HCPCS codeG0399
Long description
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
Short description
Home sleep test/type 3 porta
Pricing indicator
13 Priced by the Medicare contractor (carrier)
Medicare coverage
C Carrier judgment – coverage decided by the Medicare contractor
BETOS category
T2D Other tests - other
Added
March 13, 2008
Last change
March 13, 2008 – No change

Frequently asked questions

What is HCPCS code G0399?

G0399 is a HCPCS Level II 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.

Does Medicare cover G0399?

The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.

Nearby G codes

Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.