J93.12
Billable codeSecondary spontaneous pneumothorax
The ICD-10 code for secondary spontaneous pneumothorax is J93.12.
Clinical notes
Code first
This code represents a manifestation of an underlying disease. Coding convention requires the underlying (etiology) code to be sequenced first, with this code listed second.
- 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)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This code represents a manifestation. Documentation should identify the underlying condition, which must be coded first.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- J93.11Primary spontaneous pneumothorax
- J93.12Secondary spontaneous pneumothorax
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 51282
Associated MS-DRGs
J93.12 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.