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O23.33

✓ Billable

Infections of other parts of urinary tract in pregnancy, third trimester

Pregnancy, childbirth and the puerperium (O00-O9A)

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

O23
  • • 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)

📋 Code Instructions

inherited
O23
  • • code to identify organism (B95.-, B96.-)

Clinical Description

ICD-10-CM code O23.33 represents infections of other parts of urinary tract in pregnancy, third trimester. This code falls under the Pregnancy, childbirth and the puerperium (O00-O9A) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code O23.33?

ICD-10-CM code O23.33 is "Infections of other parts of urinary tract in pregnancy, third trimester". It belongs to the category: Pregnancy, childbirth and the puerperium (O00-O9A).

Is O23.33 a billable ICD-10 code?

Yes, O23.33 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Can O23.33 be coded with other codes?

O23.33 has 5 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in O23.3

Other codes in the same category that may be relevant for differential coding:

O23.30Infections of other parts of urinary tract in pregnancy, unspecified trimesterO23.31Infections of other parts of urinary tract in pregnancy, first trimesterO23.32Infections of other parts of urinary tract in pregnancy, second trimester

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Code Information

CodeO23.33
BillableYes
ParentO23.3
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes10 rule(s)
Excludes25 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)