Table 3.

Pregnancy-related ICD-9 codes for patients with missed abortion but whose chart was labeled with ICD-9 code other than “632” (n=18).

ICD-9 code	ICD-9 diagnosis	n (%) of missed abortion with ICD-9 code other than “632”
640.93	Unspecified hemorrhage in early pregnancy, antepartum condition or complication	7 (38.9%)
640.03	Threatened abortion	5 (27.8%)
631	Other abnormal product of conception	1 (5.6%)
633	Ectopic pregnancy	1 (5.6%)
634.9	Spontaneous abortion without mention of complications – unspecified stage	1 (5.6%)
640.83	Other specified hemorrhage in early pregnancy	1 (5.6%)
641.93	Unspecified antepartum hemorrhage, antepartum condition or complication	1 (5.6%)
649.53	Spotting pregnancy, antepartum condition or complication	1 (5.6%)

ICD-9, International Classification of Disease, Ninth Revision