O23.3 – Infections of other parts of urinary tract in pregnancy

ICD-10-CM 2027 diagnosis code · Other maternal disorders predominantly related to pregnancy

Non-billable header

ICD-10-CM code O23.3

Code: O23.3 (claims format: O233)
Description: Infections of other parts of urinary tract in pregnancy
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: O20-O29 Other maternal disorders predominantly related to pregnancy
Parent codes: O23

Billable codes under O23.3

O23.3 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

O23 – Infections of genitourinary tract in pregnancy

Excludes2 (not included here):

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)
venereal disease NOS complicating pregnancy, childbirth and the puerperium (O98.3)

Use additional code:

code to identify organism (B95.-, B96.-)

Block O20-O29

Excludes2 (not included here):

maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)

Index terms for O23.3

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in O23

Frequently asked questions

What is ICD-10 code O23.3?

O23.3 is the ICD-10-CM code for infections of other parts of urinary tract in pregnancy, in the block O20-O29 (Other maternal disorders predominantly related to pregnancy).

Is O23.3 a billable code?

No. O23.3 is a header code with more specific child codes; report one of the billable codes listed above.

What category does O23.3 belong to?

It belongs to category O23 – Infections of genitourinary tract in pregnancy.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.