Table 4.

Complex biliary surgery morbidity, mortality and observed/expected indices

CPT code	Principal procedure	n	Observed morbidity, %	Expected morbidity, %	Morbidity index	Observed mortality, %	Expected mortality, %	Mortality index
47420	Choledochotomy, CDE, sphincteroplasty	61	27.9	23.7	1.18	4.9	4.0	1.22
47460	Transduodenal sphincteroplasty	63	12.7	11.9	1.07	0.0	0.6	0.00
47564	Lap chole w CDE	273	3.3	9.1	0.36	0.4	1.1	0.36
47610	Open chole w CDE	299	22.1	22.9	0.97	5.7	5.0	1.14
47612	Open chole w CDE w CD ent	75	14.7	20.5	0.72	0.0	3.4	0.00
47760	Hepaticojejunostomy	125	20.0	27.2	0.74	1.6	2.7	0.59
47765	Cholangiojejunostomy	33	33.3	39.1	0.85	3.0	2.9	1.03
47780	Roux-Y hepaticojejunostomy	422	29.9	31.2	0.96	2.8	3.7	0.76
47785	Roux-Y cholangiojejunostomy	186	28.5	38.3	0.74	3.2	3.4	0.94
Total		1537*	21.2	24.0	0.88	2.7	3.2	0.85

^*14 other procedure codes accounted for 265 operations (mean = 18.9 procedures per operation type)

CPT code, current procedure terminology; CDE, common duct exploration; Lap chole, laparoscopic cholecystectomy; CD ent, choledochoenteric anastomosis