Table 1.

ICD-9-CM Codes Used to Classify Cardiovascular Disorders During Pregnancy and in the Year Following Pregnancy

Condition	ICD-9-CM Codes
Coronary heart disease	410.x–414.x, 429.2, V45.81
Deep vein thrombosis	451.1, 451.2, 451.81, 451.9, 453.1, 453.2, 453.8, 453.9
Diabetes mellitus
Type 1	250.x1, 250.x3
Type 2	250.x0, 250.x2
Gestational diabetesa	648.81, 648.82
Gestational hypertension	642.30, 642.31, 642.32, 642.33, 642.34, 642.90, 642.91, 642.92, 642.93, 642.94
Heart failure	428.x, 398.91, 402.01, 402.11, 402.91, 404.01, 404.11, 404.91, 404.03, 404.13, 404.93
Intracranial hemorrhage	430, 431, 432.x, 800.2, 800.3, 800.7, 800.8, 801.2, 801.3, 801.7, 801.8, 803.2, 803.3, 803.7, 803.8, 804.2, 804.3, 804.7, 804.8, 852.x, 853.x
Preeclampsia	642.40, 642.41, 642.42, 642.43, 642.44, 642.50, 642.51, 642.52, 642.53, 642.54, 642.60, 642.61, 642.62, 642.63, 642.64, 642.70, 642.71, 642.72, 642.73, 642.74
Stroke/TIA	433.x1, 434.x1, 435.x, 436, 437.1x, 437.9x, 438.x

Abbreviations: ICD-9-CM, International Classification of Diseases, Ninth Revision, Clinical Modification; TIA, transient ischemic attack.

^a Also included if indicated on the birth certificate.