J93.12 is a billable/specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Secondary spontaneous pneumothorax.
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Underlying condition, such as:
Catamenial pneumothorax due to endometriosis (N80.B-)
Cystic fibrosis (E84.-)
Eosinophilic pneumonia (J82.81-J82.82)
Lymphangioleiomyomatosis (J84.81)
Malignant neoplasm of bronchus and lung (C34.-)
Marfan syndrome (Q87.4-)
Pneumonia due to Pneumocystis carinii (B59)
Secondary malignant neoplasm of lung (C78.0-)
Spontaneous rupture of the esophagus (K22.3)
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