ICD-10-CM 2027
ICD-10 code for chronic pneumothorax nos
From the official ICD-10-CM alphabetic index entry “Pneumothorax NOS › chronic”. Page updated September 29, 2026.
About coding chronic pneumothorax nos
The ICD-10-CM code for chronic pneumothorax nos is J93.81 (Chronic pneumothorax).
Within J93.8 (other pneumothorax and air leak), J93.81 is specifically for chronic pneumothorax. Related codes cover other air leak (J93.82) and other pneumothorax (J93.83).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 199 (Pneumothorax with MCC, relative weight 1.7322), DRG 200 (Pneumothorax with CC, relative weight 1.0774) and DRG 201 (Pneumothorax without CC/MCC, relative weight 0.6782), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about chronic pneumothorax nos ICD-10 codes
What is the ICD-10 code for chronic pneumothorax nos?
- J93.81 — Chronic pneumothorax.
Is J93.81 billable?
- Yes. J93.81 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J93.81 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J93.81 as a principal diagnosis.
Is J93.81 a CC or MCC?
- J93.81 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.