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Table 3 Ranking of top 15 surgical categories, by the rate of AEs per 1,000 hospitalizations (Stays)*

From: Incidence of adverse events in an integrated US healthcare system: a retrospective observational study of 82,784 surgical hospitalizations

Procedure code (ICD-9-CM) Surgical procedure category Rate of AEs per 1,000 stays Number of AEs Total stays Stays with AEs Total procedures
37 Operations on heart and pericardium 556.7 329 591 204 750
35 Operations on valves and septa of heart 446.1 426 955 296 1,112
50 Operations on liver 418.7 85 203 53 256
31 Other operations on larynx and trachea 371.7 278 748 162 955
34 Operations on chest wall, pleura, mediastinum, and diaphragm 350.6 122 348 87 421
1 Incision and excision of skull, brain, and cerebral meninges 331.8 210 633 156 730
43 Incision and excision of stomach 331.5 61 184 46 217
52 Operations on pancreas 320.1 89 278 66 328
41 Operations on bone marrow and spleen 270.7 36 133 25 157
32 Excision of lung and bronchus 266.7 72 270 55 309
45 Incision, excision, and anastomosis of intestine 259.5 362 1,395 266 1,645
46 Other operations on intestine 248.3 110 443 94 511
36 Operations on vessels of heart 242.6 214 882 178 986
74 Cesarean section and removal of fetus 228.1 13 57 11 60
84 Other procedures of musculoskeletal system 215.9 220 1,019 169 1,250
Total for top 15 categories 322.8 2,627 8,139 1,868 9,687
Total for all 96 categories 82.8 6,856 82,784 5,368 87,119
  1. *In this table, surgical hospitalizations are abbreviated as “stays” for brevity.