ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesO23.40

O23.40

Billable

Unspecified infection of urinary tract in pregnancy, unspecified trimester

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/08/2025

Code Description

ICD-10 O23.40 is a billable code used to indicate a diagnosis of unspecified infection of urinary tract in pregnancy, unspecified trimester.

Key Diagnostic Point:

Urinary tract infections (UTIs) are common during pregnancy, affecting up to 10% of pregnant women. The condition can arise due to physiological changes such as increased urinary stasis and hormonal influences that alter the urinary tract's normal flora. Symptoms may include dysuria, frequency, urgency, and suprapubic pain. If left untreated, UTIs can lead to serious complications such as pyelonephritis, which poses risks to both the mother and fetus. Diagnosis typically involves urinalysis and urine culture. Treatment often includes antibiotics, which must be chosen carefully to ensure safety for both the mother and the developing fetus. Commonly prescribed antibiotics during pregnancy include penicillins and cephalosporins, while certain medications like tetracyclines and fluoroquinolones are contraindicated due to potential teratogenic effects. It is crucial for healthcare providers to monitor and manage UTIs effectively during pregnancy to prevent adverse outcomes.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptoms and presentation of UTIs in pregnant patients.
  • Need for accurate trimester specification when coding.
  • Potential for complications if infections are not properly documented.
  • Differentiation from other urinary conditions that may present similarly.

Audit Risk Factors

  • Inadequate documentation of symptoms leading to coding errors.
  • Failure to specify the trimester of pregnancy.
  • Incorrect coding of antibiotic treatments or failure to document them.
  • Lack of follow-up documentation for recurrent infections.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed documentation of symptoms, urinalysis results, and treatment plans is essential for accurate coding.

Common Clinical Scenarios

A pregnant patient presents with dysuria and frequency; urinalysis shows nitrites and leukocytes.

Billing Considerations

Coders must be aware of the specific antibiotics prescribed and their safety profiles during pregnancy.

Maternal-Fetal Medicine

Documentation Requirements

Comprehensive documentation of maternal health, fetal monitoring, and any complications arising from UTIs.

Common Clinical Scenarios

A high-risk pregnant patient with a history of recurrent UTIs requiring specialized management.

Billing Considerations

Consideration of maternal-fetal interactions and potential impacts on fetal development.

Coding Guidelines

Inclusion Criteria

Use O23.40 When
  • According to ICD
  • 10 coding guidelines, it is essential to document the specific trimester of pregnancy and the clinical details of the urinary tract infection
  • Coders should ensure that the diagnosis aligns with the treatment provided and that any complications are documented appropriately

Exclusion Criteria

Do NOT use O23.40 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

87086CPT Code

Urine culture, bacterial

Clinical Scenario

Used when a pregnant patient presents with UTI symptoms and requires confirmation of the diagnosis.

Documentation Requirements

Document the reason for the culture and any prior treatments.

Specialty Considerations

Ensure that the culture results are linked to the diagnosis for accurate coding.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of urinary tract infections in pregnancy, improving the accuracy of data collection and reimbursement processes. Coders must be familiar with the new codes and their implications for patient care.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of urinary tract infections in pregnancy, improving the accuracy of data collection and reimbursement processes. Coders must be familiar with the new codes and their implications for patient care.

Reimbursement & Billing Impact

reimbursement processes. Coders must be familiar with the new codes and their implications for patient care.

Resources

Clinical References

  • •
    CDC Guidelines for Antibiotic Use in Pregnancy

Coding & Billing References

  • •
    CDC Guidelines for Antibiotic Use in Pregnancy

Frequently Asked Questions

What are the common symptoms of a urinary tract infection in pregnancy?

Common symptoms include dysuria (painful urination), increased frequency and urgency of urination, and suprapubic pain. Some women may also experience fever or flank pain if the infection progresses.