ICD-10 Code J86.0 – Pyothorax with fistula (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J86.0 – Pyothorax with fistula
What it is
J86.0 identifies pyothorax, or pus in the pleural space, when a fistula is present. Use it for a documented pleural empyema with an abnormal tract connecting the pleural space to another structure.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe pleural infection, persistent drainage, or evidence of a fistulous communication on imaging, surgery, or procedure notes.
When to use this code
Use J86.0 when the provider documents pyothorax or empyema and specifically states a fistula. It also fits when operative, radiology, or discharge documentation confirms a pleural fistulous tract.
If the chart mentions empyema without fistula, choose the more general code instead. Code only what is clearly documented, and check whether the fistula is bronchopleural, pleurocutaneous, or otherwise specified.
Do not use for
Do not use J86.0 for pleural effusion, pneumothorax, or empyema without a fistula. If the fistula is not documented, check documentation before assigning this code.
Coding tip
Look for explicit wording such as “pyothorax with fistula” or a confirmed pleural communication before coding J86.0.