specific DRGs or All surgical and medical discharges age 18 PSI 6. Iatrogenic Cases of iatrogenic Discharges with years and older defined by specific DRGs Pneumothorax pneumothorax per code for iatrogenic or MS-DRGs. 1,000 discharges. pneumothorax in any secondary diagnosis field Exclude cases: among cases meeting the
specific DRGs or PSI 6. Iatrogenic Pneumothorax Cases of iatrogenic pneumothorax per 1,000 discharges. Discharges with code for iatrogenic pneumothorax in any secondary diagnosis field among cases meeting the All surgical and medical discharges age 18 years and older defined by specific DRGs or MS-DRGs. Exclude cases: