CPT® Code 92541

The spontaneous nystagmus test, as described by CPT® Code 92541, is a diagnostic procedure that evaluates involuntary eye movements known as nystagmus. Nystagmus is characterized by rapid, uncontrolled movements of the eyes, which can be indicative of various vestibular disorders. These disorders often manifest as symptoms such as vertigo, which is a sensation of spinning or dizziness, and balance disturbances that may affect a person's ability to maintain stability, stand upright, or walk normally. The test is performed using electronystagmography (ENG), a method that records eye movements through electrodes placed on the skin around the eyes. The procedure includes both gaze evoked nystagmus, where the patient's eye movements are observed while they focus on specific targets, and fixation nystagmus, which assesses eye movements when the patient is instructed to fixate on a stationary object. The physician begins by visually assessing the patient's eye movements before utilizing the recording device to capture detailed data. This comprehensive approach allows for a thorough analysis of the patient's vestibular function and aids in diagnosing potential underlying conditions related to balance and coordination.