Pyothorax with fistula

This code signifies the presence of pus within the pleural cavity (pyothorax) that has formed an abnormal connection or tract (fistula) to another organ or the skin. This condition often arises as a complication of infection, trauma, or surgery, leading to persistent drainage and potential systemic involvement.

Assign this code when documentation clearly indicates both empyema (pyothorax) and the presence of a fistula, such as a bronchopleural fistula, pleurocutaneous fistula, or pleuroenteric fistula. Supporting documentation would include physician notes detailing purulent pleural fluid and the anatomical connection of the fistula, often confirmed by imaging studies or surgical findings.

• Do not use this code for pyothorax without a documented fistula; instead, use codes from category J86 for uncomplicated pyothorax.
• Always sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis if it is a significant co-morbidity.
• Ensure the documentation specifies the type of fistula if known, as this may impact further specificity or associated procedure coding.