ICD-10-CM > J00-J99 > J85-J86 > J86 J86 Pyothorax Non-Billable/Non-Specific Use Additional code (B95-B97) to identify infectious agent. Type 1 Excludes abscess of lung (J85.-)pyothorax due to tuberculosis (A15.6) Codes J86.0Pyothorax with fistulaJ86.9Pyothorax without fistula