ICD-10-CM > O00-O9A > O20-O29 > O23 > O23.2 O23.2 Infections of urethra in pregnancy Non-Billable/Non-Specific Codes O23.20Infections of urethra in pregnancy, unspecified trimesterO23.21Infections of urethra in pregnancy, first trimesterO23.22Infections of urethra in pregnancy, second trimesterO23.23Infections of urethra in pregnancy, third trimester