Emphysema Excludes1compensatory emphysema (J98.3)emphysema due to inhalation of chemicals, gases, fumes or vapors (J68.4)interstitial emphysema (J98.2)mediastinal emphysema (J98.2)neonatal interstitial emphysema (P25.0)surgical (subcutaneous) emphysema (T81.82)Excludes2emphysema with chronic (obstructive) bronchitis (J44.-)emphysematous (obstructive) bronchitis (J44.-)traumatic subcutaneous emphysema (T79.7)