Table S1.
List of diagnosis and procedure codes
| ICD-9 code | Definition | Resection type | Approach |
|---|---|---|---|
| 32.20 | Thoracoscopic excision of lesion or tissue of lung | Wedge | VATS |
| 32.28 | Endoscopic excision or destruction of lesion or tissue of lung | Wedge | VATS |
| 32.29 | Other local excision or destruction of lesion or tissue of lung | Wedge | Open |
| 32.30 | Thoracoscopic segmental resection of lung | Segmentectomy | VATS |
| 32.39 | Other and unspecified segmental resection of lung | Segmentectomy | Open |
| 32.41 | Thoracoscopic lobectomy of lung | Lobectomy | VATS |
| 32.49 | Other lobectomy of lung | Lobectomy | Open |
| 32.50 | Thoracoscopic pneumonectomy | Pneumonectomy | VATS |
| 32.59 | Other and unspecified pneumonectomy | Pneumonectomy | Open |
|
| |||
| Primary outcomes (ICD-9 diagnosis codes) for any air leak complication | |||
|
| |||
| ICD-9 code | Definition | Complication type | |
|
| |||
| 512.2 | Postoperative air leak | Air leak | |
| 512.84 | Other air leak | Air leak | |
| 512.1 | Iatrogenic pneumothorax | Pneumothorax | |
| 512.89 | Other pneumothorax | Pneumothorax | |
|
| |||
| Coding algorithm for Charlson comorbidities25 | |||
|
| |||
| ICD-9 code | Comorbidities | ||
|
| |||
| 410.x, 412.x | Myocardial infarction | ||
| 428.x | Congestive heart failure | ||
| 443.9, 441.x, 785.4, V43.4 procedure 38.48 | Peripheral vascular disease | ||
| 430.x–438.x | Cerebrovascular disease | ||
| 290.x | Dementia | ||
| 490.x–505.x, 506.4 | Chronic pulmonary disease | ||
| 710.0, 710.1, 710.4, 714.0–714.2, 714.81, 725.x | Rheumatic disease | ||
| 531.x–534.x | Peptic ulcer disease | ||
| 571.2, 571.4–571.6 | Mild liver disease | ||
| 250.0–250.3, 250.7 | Diabetes without chronic complication | ||
| 250.4–250.6 | Diabetes with chronic complication | ||
| 344.1, 342.x | Hemiplegia or paraplegia | ||
| 582.x, 583-583.7, 585.x, 586.x, 588.x | Renal disease | ||
| 140.x–172.x, 174.x–195.8, 200.x–208.x | Any malignancy, including lymphoma and leukemia, except malignant neoplasm of skin | ||
| 456.0–456.21, 572.2–572.8 | Moderate or severe liver disease | ||
| 196.x–199.1 | Metastatic solid tumor | ||
| 042.x–044.x | AIDS/HIV | ||
Note: Only select comorbidities based on bivariate analysis were included in the regression models.
Abbreviations: ICD-9, International Classification of Diseases, Ninth Revision; VATS, video-assisted thoracoscopic surgery.