ICD-10-CM > O00-O9A > O30-O48 > O34 > O34.2 O34.2 Maternal care due to uterine scar from previous surgery Non-Billable/Non-Specific Codes O34.21Maternal care for scar from previous cesarean deliveryO34.211Maternal care for low transverse scar from previous cesarean deliveryO34.212Maternal care for vertical scar from previous cesarean deliveryO34.218Maternal care for other type scar from previous cesarean deliveryO34.219Maternal care for unspecified type scar from previous cesarean deliveryO34.22Maternal care for cesarean scar defect (isthmocele)O34.29Maternal care due to uterine scar from other previous surgery