HCPCS Level II · Procedures and professional services (temporary)
G0400Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About G0400
G0400 is an HCPCS Level II code in the G series (procedures and professional services (temporary)), describing home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels.
It was added to HCPCS effective 03/13/2008.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Home sleep test/type 4 porta
- Date added
- 03/13/2008
- Action effective
- 03/13/2008
- BETOS
- T2D
Related G04xx codes
- G0402Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
- G0403Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report
- G0404Electrocardiogram, routine ecg with 12 leads; tracing only, without interpretation and report, performed as a screening for the initial preventive physical examination
- G0405Electrocardiogram, routine ecg with 12 leads; interpretation and report only, performed as a screening for the initial preventive physical examination
- G0406Follow-up inpatient consultation, limited, physicians typically spend 15 minutes communicating with the patient via telehealth
- G0407Follow-up inpatient consultation, intermediate, physicians typically spend 25 minutes communicating with the patient via telehealth
- G0408Follow-up inpatient consultation, complex, physicians typically spend 35 minutes communicating with the patient via telehealth
- G0409Social work and psychological services, directly relating to and/or furthering the patient's rehabilitation goals, each 15 minutes, face-to-face; individual (services provided by a corf-qualified social worker or psychologist in a corf)
- G0410Group psychotherapy other than of a multiple-family group, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutes
- G0411Interactive group psychotherapy, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutes
- G0412Open treatment of iliac spine(s), tuberosity avulsion, or iliac wing fracture(s), unilateral or bilateral for pelvic bone fracture patterns which do not disrupt the pelvic ring includes internal fixation, when performed
- G0413Percutaneous skeletal fixation of posterior pelvic bone fracture and/or dislocation, for fracture patterns which disrupt the pelvic ring, unilateral or bilateral, (includes ilium, sacroiliac joint and/or sacrum)
Common questions about G0400
Is HCPCS G0400 still valid?
- Yes. G0400 is active in the CMS October 2026 HCPCS file.
Does Medicare cover G0400?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.