ICD-10-CM > O00-O9A > O30-O48 > O43 > O43.2 > O43.21 O43.21 Placenta accreta Non-Billable/Non-Specific Codes O43.211Placenta accreta, first trimesterO43.212Placenta accreta, second trimesterO43.213Placenta accreta, third trimesterO43.219Placenta accreta, unspecified trimester