Chronic eosinophilic pneumonia

This code represents a rare, chronic inflammatory lung condition characterized by the accumulation of eosinophils in the alveolar spaces and interstitial tissue of the lungs. Patients typically present with respiratory symptoms such as cough, dyspnea, and wheezing, often accompanied by systemic symptoms like fever and weight loss. The condition is distinct from other forms of eosinophilic lung disease by its chronic nature and often relapsing-remitting course.

Assign this code when documentation clearly indicates a diagnosis of chronic eosinophilic pneumonia. This diagnosis is typically supported by clinical presentation, characteristic radiographic findings (e.g., peripheral infiltrates), and bronchoalveolar lavage (BAL) or biopsy showing significant eosinophilia. Use this code for established cases of chronic eosinophilic pneumonia, not for acute or transient eosinophilic infiltrates.

• Differentiate from acute eosinophilic pneumonia (AEP) and other eosinophilic lung diseases; documentation must specify "chronic."
• Ensure the medical record supports the chronic nature of the condition, often with a history of recurrent episodes or prolonged symptoms.
• Consider sequencing with codes for associated conditions or complications, such as respiratory failure, if present.