Table 6.

Pregnancy-related diagnoses and corresponding ICD-9 codes for patients without missed abortion but whose chart was labeled with ICD-9 code “632” (n=13).

ICD-9 Code	ICD-9 diagnosis	n (%)
634.91	Spontaneous abortion without mention of complications - incomplete	7 (53.9%)
634.92	Spontaneous abortion without mention of complications - complete	2 (15.4%)
633	Ectopic pregnancy	1 (7.7%)
637	Unspecified abortion, retained products of conception following abortion	1 (7.7%)
637.9	Abortion (complete, incomplete, inevitable or with retained products of conception)	1 (7.7%)
639	Genital tract and pelvic infection, including endometritis	1 (7.7%)

ICD-9, International Classification of Disease, Ninth Revision