Chronic laryngitis

This code represents a persistent inflammation of the larynx, the voice box, lasting for an extended period, typically more than three weeks. It is characterized by symptoms such as hoarseness, vocal fatigue, a persistent cough, and a sensation of a lump in the throat.

Assign this code when documentation clearly indicates a diagnosis of chronic laryngitis. This diagnosis is often supported by a history of prolonged vocal symptoms, physical examination findings of laryngeal inflammation, and the exclusion of acute causes.

• Differentiate from acute laryngitis (464.00) based on the duration of symptoms.
• Look for specific causes of chronic laryngitis, such as reflux (GERD), vocal abuse, or environmental irritants, and code them additionally if documented.
• Ensure the physician's documentation explicitly states "chronic" to support this code.