ICD-10-CM > O00-O9A > O10-O16 > O15 > O15.0 O15.0 Eclampsia complicating pregnancy Non-Billable/Non-Specific Codes O15.00Eclampsia complicating pregnancy, unspecified trimesterO15.02Eclampsia complicating pregnancy, second trimesterO15.03Eclampsia complicating pregnancy, third trimester