Appendix 1.

Diagnostic Codes Used to Define Maternal End-Organ Injury

Complication	ICD-9 CM Codes
Acute heart failure	415.0x, 427.5x, 428.0x, 428.1, 428.21, 428.31, 428.41, 997.1x, 669.4x, 428.23, 428.33, 428.43, 428.9x
Acute renal failure	584.x, 669.3x
Acute liver disease	570, 646.7x
Acute myocardial infarction	410.x
Acute respiratory distress syndrome/respiratory failure	518.81, 518.82, 518.84, 518.5x, 799.1x, 518.7x
Disseminated intravascular coagulation/coagulopathy	666.3x, 286.6x, 286.7x, 286.9x, 287.4
Coma	780.01, 780.03, 572.2x, 250.2x, 250.3x, 251.0x
Delirium	293.x
Puerperal cerebrovascular disorders	671.5x, 674.0x, 430.xx–432.xx, 436, 997.01, 997.02, 433.01, 433.11, 433.21, 433.31, 433.81, 433.91, 434.01, 434.11, 434.91, 325, 348.1, 348.3x, 348.5x, 437.1x, 437.2x, 437.6x, 346.6x
Pulmonary edema	514.xx, 518.4x 428.1x
Pulmonary embolism	673.x, 415.1x
Sepsis	038.x, 995.91, 995.92, 112.5x, 659.3x, 785.52
Shock	669.1x, 785.5x, 998.0x, 995.4x, 995.0x, 995.94, 999.4x
Status asthmaticus	493.01, 493.11, 493.21, 493.91
Status epilepticus	345.3x

ICD-9-CM, International Classification of Diseases, 9th Revision, Clinical Modification.