Research Article

Surgeons’ Volume-Outcome Relationship for Lobectomies and Wedge Resections for Cancer Using Video-Assisted Thoracoscopic Techniques

Table 8

ICD-9 codes for index diagnosis.

Indications for surgery
Malignant
 Primary neoplasm of the lung162.x, 209.21*
 Metastatic site197.0

*ICD code 209.21 (malignant carcinoid tumor of the lung) came into existence on October 1, 2008. Prior to October 1, 2008, this type of lung cancer was coded together with 162.x.