ICD-10 Code J82.82 – Acute eosinophilic pneumonia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J82.82 – Acute eosinophilic pneumonia
What it is
J82.82 identifies acute eosinophilic pneumonia, a sudden inflammatory lung condition marked by eosinophil buildup in the lungs. Use it when the record clearly documents this specific diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Typical records describe acute fever, cough, shortness of breath, and diffuse lung infiltrates, with eosinophilic inflammation confirmed by imaging, bronchoscopy, or pathology.
When to use this code
Use J82.82 when the provider diagnoses acute eosinophilic pneumonia, including cases confirmed during inpatient evaluation or specialist workup. It is appropriate when the note distinguishes this condition from other causes of eosinophilic lung disease or pneumonia. If the chart only says “pneumonia” or “eosinophilia,” check documentation.
Do not use for
Do not use this code for chronic eosinophilic pneumonia, asthma, or unspecified pneumonia without documentation of acute eosinophilic pneumonia. Do not assume the diagnosis from isolated eosinophilia alone.
Coding tip
Assign J82.82 only when the provider explicitly links the lung findings to acute eosinophilic pneumonia.