ICD-10-CM > J00-J99 > J85-J86 > J85 J85 Abscess of lung and mediastinum Non-Billable/Non-Specific Use Additional code (B95-B97) to identify infectious agent. Codes J85.0Gangrene and necrosis of lungJ85.1Abscess of lung with pneumoniaJ85.2Abscess of lung without pneumoniaJ85.3Abscess of mediastinum