TABLE 2

Pneumothorax (PTX) diagnoses in the validation population

PTX diagnosis (ICD code)ICD diagnosis
ICD diagnosis applied originallyICD diagnosis after re-evaluation
Spontaneous PTX 
 With tension (J93.0)17256
 Without tension (J93.1)491666
Iatrogenic PTX 
 Post-surgery (J95.8A)14117
 Iatrogenic (T81.2)067
Traumatic PTX (S.27.0)476490
Other kinds of PTX (J93.8)150
Unspecified PTX (J93.9)5990
Misclassification036

ICD: International Classification of Diseases.