ICD-10-CM > O00-O9A > O30-O48 > O34 > O34.5 > O34.51 O34.51 Maternal care for incarceration of gravid uterus Non-Billable/Non-Specific Codes O34.511Maternal care for incarceration of gravid uterus, first trimesterO34.512Maternal care for incarceration of gravid uterus, second trimesterO34.513Maternal care for incarceration of gravid uterus, third trimesterO34.519Maternal care for incarceration of gravid uterus, unspecified trimester