ICD-10-CM > O00-O9A > O30-O48 > O30 > O30.9 O30.9 Multiple gestation, unspecified Non-Billable/Non-Specific Applicable To Multiple pregnancy NOS Codes O30.90Multiple gestation, unspecified, unspecified trimesterO30.91Multiple gestation, unspecified, first trimesterO30.92Multiple gestation, unspecified, second trimesterO30.93Multiple gestation, unspecified, third trimester