ICD-10-CM > O00-O9A > O09-O09 > O09 > O09.8 > O09.89 O09.89 Supervision of other high risk pregnancies Non-Billable/Non-Specific Codes O09.891Supervision of other high risk pregnancies, first trimesterO09.892Supervision of other high risk pregnancies, second trimesterO09.893Supervision of other high risk pregnancies, third trimesterO09.899Supervision of other high risk pregnancies, unspecified trimester