Table 1.

International Classification of Diseases, ICD-9 codes recorded

Disease type	Code
Intraoperative	ICD-9 code: 998.2
Urinary	ICD-9 code: 997.5
Digestive	ICD-9 code: 997.4
Respiratory	ICD-9 codes: 512.1; 997.3
Hemorrhagic	ICD-9 codes: 998.11; 998.12
Cardiac	ICD-9 code: 997.1
Infectious	ICD-9 code: 998.59
Vascular	ICD-9 codes: 997.2; 999.2
Seromas	ICD-9 codes: 998.13; 998.51
Wound complications	ICD-9 codes: 998.3; 998.83
Others	ICD-9 codes: 998.4; 999.8
Transfusions of packed cells or previously collected autologous blood	ICD-9 codes: 99.02; 99.04

ICD: International Classification of Diseases.