O23Infections of genitourinary tract in pregnancy

O23 is the ICD-10-CM diagnosis code for infections of genitourinary tract in pregnancy. It belongs to block O20-O29 (other maternal disorders predominantly related to pregnancy) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: O23.0 (pregnancy), O23.1 (pregnancy), O23.2 (pregnancy), O23.3 (pregnancy), O23.4 (pregnancy), O23.5 (pregnancy) and O23.9 (pregnancy).

The conditions in its Excludes2 note aren't part of O23, but may be coded alongside it if the patient has both: gonococcal infections complicating pregnancy, childbirth and the puerperium (O98.2), infections with a predominantly sexual mode of transmission NOS complicating pregnancy, childbirth and the puerperium (O98.3), syphilis complicating pregnancy, childbirth and the puerperium (O98.1), tuberculosis of genitourinary system complicating pregnancy, childbirth and the puerperium (O98.0) and 1 more.

Use an additional code to identify organism (B95.-, B96.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.