ICD-9-CM Code 512.82

Secondary spontaneous pneumothorax

Code first  underlying condition, such as:

cancer metastatic to lung (197.0)
catamenial pneumothorax due to endometriosis (617.8)
cystic fibrosis (277.02)
eosinophilic pneumonia (518.3)
lymphangioleiomyomatosis (516.4)
Marfan syndrome (759.82)
pneumocystis carinii pneumonia (136.3)
primary lung cancer (162.3-162.9)
spontaneous rupture of the esophagus (530.4)