T75.23 Vertigo from infrasound

Name of the Condition

• Vertigo from infrasound

Summary

This code is used to classify vertigo resulting from exposure to infrasound, which is low-frequency sound below the audible range for humans. It applies when infrasound is the direct or contributing cause of the reported vertigo, and the clinical connection between infrasound exposure and vertigo is documented or evident.

Causes

Vertigo under this code may arise from exposure to infrasound, which can affect the vestibular system through indirect mechanisms such as resonance or pressure changes. Sources may include industrial machinery, wind turbines, or other environments with sustained low-frequency sound waves.

Risk Factors

• Prolonged or intense exposure to infrasound-emitting equipment or environments.
• Occupational settings with high levels of low-frequency noise (e.g., industrial facilities, wind farms).
• Lack of protective measures or barriers to reduce infrasound exposure.
• Pre-existing vestibular disorders that may increase susceptibility to balance disturbances.

Symptoms

• Sensation of spinning or dizziness (vertigo).
• Nausea or vomiting associated with movement.
• Unsteadiness or loss of balance.
• Visual disturbances (e.g., blurred vision, nystagmus).
• Headache or ear pressure.

Diagnosis

Diagnosis relies on clinical evaluation of vertigo symptoms, a history of infrasound exposure, and exclusion of other causes (e.g., inner ear disorders, neurological conditions). Audiological or vestibular testing may be used to assess function, and environmental exposure assessments can confirm infrasound levels.

Treatment Options

Treatment focuses on symptom management and addressing the underlying exposure. This may include antiemetics for nausea, vestibular rehabilitation therapy, and avoidance or reduction of infrasound exposure. In some cases, medications to stabilize the vestibular system may be prescribed.

Prognosis and Follow-Up

Prognosis depends on the duration and intensity of exposure and the individual’s response to treatment. Most cases resolve with reduced exposure, but chronic exposure may lead to persistent symptoms. Follow-up may involve monitoring for recurrence and adjusting environmental controls as needed.

Complications

• Chronic vertigo or balance disorders.
• Anxiety or psychological distress related to symptoms.
• Impaired daily functioning due to persistent dizziness.
• Potential progression to more severe vestibular dysfunction with continued exposure.

Lifestyle & Prevention

• Avoid or limit time in environments with high infrasound levels.
• Use protective equipment or barriers in occupational settings.
• Maintain good vestibular health through regular exercise and balance training.
• Stay hydrated and manage stress, which may exacerbate vertigo.

When to Seek Professional Help

Seek medical attention if vertigo is severe, persistent, or accompanied by neurological symptoms (e.g., weakness, confusion), as these may indicate a more serious condition. Prompt evaluation is also recommended if symptoms interfere with daily activities or worsen over time.

Tips for Medical Coders

Document the clinical relationship between infrasound exposure and vertigo, including details of the exposure source and timing. Ensure the diagnosis is supported by clinical findings or testing, and avoid using this code if the cause of vertigo is unrelated to infrasound.