ICD-10-CM > O00-O9A > O09-O09 > O09 > O09.6 > O09.61 O09.61 Supervision of young primigravida Non-Billable/Non-Specific Codes O09.611Supervision of young primigravida, first trimesterO09.612Supervision of young primigravida, second trimesterO09.613Supervision of young primigravida, third trimesterO09.619Supervision of young primigravida, unspecified trimester