Appendix 1.

ICD-9-CM codes used to define clinical conditions from NIS data from 2003 to 2006

ConditionICD-9-CM Codes
AKIDiagnosis codes 584.5, 584.6, 584.7, 584.8, 584.9
DialysisDiagnosis codes for AKI as above + V34.1, V560, V561, or procedure code 39.95
Mechanical ventilationProcedure codes 93.90, 93.92, 96.01, 96.04, 96.05, 96.70, 96.71, 96.72
SepsisDiagnosis codes 038.x, 112.5, 112.81, 02.02, 79.07, 78.559
PneumoniaDiagnosis codes 460.x, 481, 482.x, 483.x, 484.x, 485, 486
Acute myocardial infarctionDiagnosis codes 410.x
Heart failureDiagnosis codes 428.x
Gastrointestinal hemorrhageDiagnosis codes 578.x
Acute pancreatitisDiagnosis code 577.0
Liver failureDiagnosis code 570