MCMedicalCodingSoftware
O23.42

O23.42: Unspecified infection of urinary tract in pregnancy, second trimester

Billable / specific codeICD-10-CM

O23.42 is a billable, specific ICD-10-CM code for unspecified infection of urinary tract in pregnancy, second trimester. It is valid for submission on a claim.

Check O23.42 with the rest of the claim: free scrubber

Excludes2 inherited from the categories above O23.42

Not part of this code, but both may be coded when both are present.

Written on O23: Infections of genitourinary tract in pregnancy

  • 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)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under O23.4

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.