Adverse events	ICD-9 codes
Postoperative shock	998.0
Hematoma or seroma	998.1
Disruption of wound	998.3
Postoperative infection	998.5
Acute posthemorrhagic anemia	285.1
Complications not elsewhere classified	997
Acute renal failure	580, 584
Acute myocardial infarction	410
Ventricular arrhythmias and cardiac arrest	427.4, 427.5
Pneumonia and pulmonary congestion	482, 485, 486, 514, 5184
Iatrogenic postoperative hypotension	458.29
Pulmonary embolism	415.1
Induced mental disorders	291, 292, 293
Cerebrovascular disease	430, 431, 432, 433, 434, 435, 436
Fat embolism	958.1
Pulmonary insufficiency after trauma, surgery, transfusion, or acute respiratory distress syndrome	518.5, 518.7, 518.81
Thrombotic events	451.1, 451.2, 453.2, 453.4, 453.8, 453.9
Intubation and mechanical ventilation	96.04, 96.07
Transfusion of blood (components)	99.0
Conversion of cardiac rhythm	99.6

ICD-9 = International Classification of Diseases, 9th Revision.