Table 2.

Hepatic surgery morbidity, mortality and observed/expected indices

CPT code	Principal procedure	n	Observed morbidity, %	Expected morbidity, %	Morbidity index	Observed mortality, %	Expected mortality, %	Mortality index
47120	Hepatectomy, partial lobe	1357	18.1	26.4	0.69	1.8	2.2	0.82
47122	Hepatectomy, extensive	230	35.7	49.8	0.72	5.2	3.7	1.41
47125	Hepatectomy, left	233	21.5	42.0	0.51	0.9	3.1	0.29
47130	Hepatectomy, right	512	27.9	46.2	0.60	3.7	3.4	1.09
47379	Hepatectomy, laparoscopic	350	4.6	5.7	0.81	1.1	0.8	1.38
47380	Ablation, radiofrequency	165	21.8	18.8	1.16	2.4	2.7	0.89
Total		2847	20.1	30.1	0.67	2.3	2.5	0.92

CPT code, current procedure terminology