Table 5.

Positive predictive value analysis.

	Patient presentation met definition of ICD-9 “632” code
Patient encounter assigned ICD-9 code “632”	Yes	No
Yes	39	13	PPV=75.0%
No	0	0	NPV=not applicable

ICD-9, International Classification of Disease, Ninth Revision; PPV, positive predictive value; NPV, negative predictive value

^*Non-viable pregnancy or retained products of conception with closed cervix.