O23.9
Unspecified genitourinary tract infection in pregnancy
O23.9 is a non-billable ICD-10-CM code header for unspecified genitourinary tract infection in pregnancy. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are O23.90 Unspecified genitourinary tract infection in pregnancy, unspecified trimester; O23.91 Unspecified genitourinary tract infection in pregnancy, first trimester; O23.92 Unspecified genitourinary tract infection in pregnancy, second trimester and O23.93 Unspecified genitourinary tract infection in pregnancy, third trimester. Its coding notes include a Use additional code instruction, 1 Excludes1 entry and 11 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
The trimester character comes from the provider's documentation for the current encounter. The unspecified trimester code should rarely be used.
Use additional code
Add the listed code as a secondary code, if known.
Also from chapter/block level (1 note)
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Also from chapter/block level (1 note)
- supervision of normal pregnancy (Z34.-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- 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)
Also from chapter/block level (6 notes)
- 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)
Inclusion terms
Conditions classified to this code.
- Genitourinary tract infection in pregnancy NOS
Notes
Also from chapter/block level (6 notes)
- CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
- Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
- Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
- 1st trimester- less than 14 weeks 0 days
- 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
- 3rd trimester- 28 weeks 0 days until delivery
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 4 entries
- Pregnancy (single) (uterine), complicated by (care of) (management affected by), abscess or cellulitis, genital organ or tract
- Pregnancy (single) (uterine), complicated by (care of) (management affected by), genital tract infection
- Pregnancy (single) (uterine), complicated by (care of) (management affected by), infection (s), genital organ or tract
- Pregnancy (single) (uterine), complicated by (care of) (management affected by), infection (s), genitourinary tract
More specific codes under O23.9 4
- O23.90Unspecified genitourinary tract infection in pregnancy, unspecified trimesterBillable
- O23.91Unspecified genitourinary tract infection in pregnancy, first trimesterBillable
- O23.92Unspecified genitourinary tract infection in pregnancy, second trimesterBillable
- O23.93Unspecified genitourinary tract infection in pregnancy, third trimesterBillable