G0400 Home sleep test/type 4 porta
Also known as: home sleep test Type 4, pulse oximetry sleep test, SpO2 sleep monitor
Home sleep apnea test using Type 4 portable sleep monitor with single-channel oximetry for detection of possible sleep apnea.
In Plain Language
oxygen level sleep test at home
Clinical Context
Most limited form of home sleep testing using only oxygen saturation monitoring. Indicated for patients with high pretest probability.
RVU Information
CPT G0400 does not have a physician work RVU assigned by CMS. Reimbursement for this code is determined by payer-specific fee schedules.
Billing & Documentation
G-codes are CMS-specific HCPCS codes for services not covered by standard CPT. Documentation requirements follow the same standards as the equivalent CPT service. Check Medicare LCD/NCD policies for coverage criteria.
How This Code Compares
This code has a work RVU of 0.00, meaning it does not have a physician work component assigned by CMS. In the G Codes category, 85% of codes share this characteristic.
Specialties
Frequently Asked Questions
What is CPT code G0400?
CPT G0400 (Home sleep test/type 4 porta) is a G Codes code. Home sleep apnea test using Type 4 portable sleep monitor with single-channel oximetry for detection of possible sleep apnea.
Who uses CPT code G0400?
CPT G0400 is used by Sleep Medicine, Pulmonology. Most limited form of home sleep testing using only oxygen saturation monitoring. Indicated for patients with high pretest probability.
When is CPT G0400 used?
Most limited form of home sleep testing using only oxygen saturation monitoring. Indicated for patients with high pretest probability.
Track This Code in RVU Edge
Log procedures, calculate wRVUs, and benchmark against national data — all in one app.
CPT® is a registered trademark of the American Medical Association. Data sourced from CMS Physician Fee Schedule RVU26A. Descriptions, synonyms, and clinical context are original content by RVU Edge.