ICD-10 Code J93.81 – Chronic pneumothorax (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code J93.81 – Chronic pneumothorax
What it is
Chronic pneumothorax means air remains in the pleural space over time, rather than resolving normally. Use this code when documentation clearly identifies a persistent or long-standing pneumothorax.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include ongoing chest pain, shortness of breath, reduced breath sounds, or imaging showing persistent pleural air.
When to use this code
Use J93.81 when the record states chronic pneumothorax, persistent pneumothorax, or a pneumothorax that has not resolved over a documented period. You should code it when the provider specifically links the condition to chronicity. If the note only says pneumothorax without duration, check documentation.
Do not use for
Do not use this code for acute, traumatic, or tension pneumothorax unless the provider documents chronicity. Do not assume chronic status from prior history alone.
Coding tip
Code J93.81 only when the documentation clearly supports a chronic or persistent pneumothorax.