J93.11 Primary spontaneous pneumothorax

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from J93 Pneumothorax and air leak

Excludes1 (never code together)

• congenital or perinatal pneumothorax (P25.1)
• postprocedural air leak (J95.812)
• postprocedural pneumothorax (J95.811)
• traumatic pneumothorax (S27.0)
• tuberculous (current disease) pneumothorax (A15.-)
• pyopneumothorax (J86.-)

MS-DRG index

Defines the logic of DRG(s) 199-201 in MDC 04.

Approximate ICD-9-CM (GEMs)

• 512.81 Primary spontaneous pneumothorax

Code annotations containing back-references to J93.11

Back-references to J93

• Type 1 Excludes: S27.0 Traumatic pneumothorax ("spontaneous pneumothorax (J93.-)")

Diagnosis Index entries for J93.11

• Pneumothorax NOS › spontaneous NOS › primary

Nearby codes

• J93 Pneumothorax and air leak
• J93.0 Spontaneous tension pneumothorax
• J93.1 Other spontaneous pneumothorax
• J93.11 Primary spontaneous pneumothorax (this code)
• J93.12 Secondary spontaneous pneumothorax
• J93.8 Other pneumothorax and air leak
• J93.81 Chronic pneumothorax
• J93.82 Other air leak
• J93.83 Other pneumothorax