Start New EnglishEspañol中文РусскийالعربيةTiếng ViệtFrançaisDeutsch한국어Tagalog Library Performance

2025 HCPCS code 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.

This code should be used for unattended home sleep studies using a type III portable monitor with at least 4 channels recording respiratory movement/airflow, ECG/heart rate, and oxygen saturation. It is important to verify payer-specific guidelines for home sleep testing and which codes they accept.

Modifier 26 may be appended to indicate the professional component (interpretation) of the service if performed separately.

Medical necessity for this test is established when the patient exhibits signs and symptoms suggestive of a sleep disorder, such as obstructive sleep apnea, and a home sleep test is deemed an appropriate initial diagnostic step by the treating physician. Comorbidities or other factors may influence the choice of diagnostic tools.

In simple words: This is a sleep test you can do at home to check for sleep problems, especially sleep apnea. You wear a small device that records your breathing, heart rate, and oxygen levels while you sleep. A doctor then reviews the results to see if you have any sleep disorders.

This code represents a home sleep study for a patient to diagnose a sleep disorder. The patient uses a type III portable monitor with a minimum of four channels. This test is unattended and checks the physiological parameters of the patient. A provider uses a home sleep study for a patient with a diagnosis of obstructive sleep apnea or to identify sleep disorders. The patient wears a small portable device with electrodes that attach to different body areas. He uses a type III portable monitor with a minimum of four channels. This device has the ability to record body functions during sleep, which a provider can then analyze the results to determine the disorder. The procedure should be performed according to the order of the treating provider. A home sleep test is for a single overnight session and evaluates the physiological parameters such as respiratory movement, airflow, an electrocardiogram, heart rate, and oxygen saturation.

Example 1: A 50-year-old male patient presents with excessive daytime sleepiness and snoring. His physician orders a home sleep test using a type III portable monitor to assess for obstructive sleep apnea., A 35-year-old female patient reports insomnia and difficulty staying asleep. Her physician orders a home sleep test using a type III portable monitor to rule out other sleep disorders and gather preliminary data before a full polysomnography., A 60-year-old male patient with a history of heart disease is experiencing unusual nighttime breathing patterns. His physician orders a home sleep test with a type III portable monitor to check for sleep-related breathing disorders that might be affecting his cardiac health.

Documentation should include the patient's symptoms, medical history, the results of the home sleep test, and the physician's interpretation of the results. Any pre-test questionnaires (such as STOP-BANG, Epworth Sleepiness Scale, etc.) should also be documented.

** It's crucial to check with each payer for their specific coding and billing requirements for HSATs, as they may vary.While physicians can typically prescribe HSATs, the interpretation often requires a sleep specialist.The selection of a specific type of HSAT and corresponding code depends on the clinical indication and the information required for diagnosis and treatment planning. For other types of portable monitors or different channel combinations, other HCPCS codes (like G0398 or G0400) or CPT codes (like 95806) may be applicable.

** Only Enterprise users with EHR integration can access case-specific answers. Click here to request access.

Discover what matters.

iFrame™ AI's knowledge is aligned with and limited to the materials uploaded by users and should not be interpreted as medical, legal, or any other form of advice by iFrame™.