TABLE 1.

ICD-9 Procedure Codes

ICD-9 Procedure Code	Definition
52.6	Pancreatectomy (total) with synchronous duodenectomy
52.7	Pancreaticoduodenectomy, radical (one-stage) (two-stage)
52.51	Proximal pancreatectomy (head) (with part of body) (with synchronous duodenectomy)
52.52	Distal pancreatectomy (tail) (with part of body)
52.53	Radical/subtotal pancreatectomy
52.59	Pancreatectomy/Pancreaticoduodenectomy partial NEC