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

Table 4 Ranking of top 15 surgical procedure categories, by the volume of procedures

Procedure code (ICD-9-CM)	Surgical procedure category	Total procedures	Number of AEs	Total stays*	Stays with AEs	Rate of AEs per 1,000 stays
81	Repair and plastic operations on joint structures	5,840	407	5,694	356	71.5
86	Incision of skin and subcutaneous tissue	5,542	436	5,064	342	86.1
80	Incision and excision of joint structures	4,904	102	4,823	86	21.1
13	Operations on lens	4,789	18	4,782	18	3.8
39	Other operations on vessels	4,654	455	4,274	358	106.5
79	Reduction of fracture and dislocation	3,020	213	2,744	183	77.6
83	Operations on muscle, fascia, and bursa, except hand	2,824	123	2,705	100	45.5
53	Repair of hernia	2,644	85	2,604	68	32.6
77	Incision, excision, and division of other bones	2,599	101	2,516	90	40.1
4	Operations on cranial and peripheral nerves	2,392	49	2,374	44	20.6
51	Operations on gallbladder and biliary tract	2,256	131	2,223	109	58.9
55	Operations on kidney	2,024	245	1,839	195	133.2
38	Incision, excision, and occlusion of vessels	1,963	258	1,806	201	142.9
68	Other incision and excision of uterus	1,873	116	1,861	105	62.3
44	Other operations on stomach	1,767	108	1,701	88	63.5
Total for top 15 categories		49,091	2,847	47,010	2,343	60.6
Total for all 96 categories		87,119	6,856	82,784	5,368	82.8

*In this table, surgical hospitalizations are abbreviated as “stays” for brevity.

ISSN: 1754-9493