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v1.0.0
ICD-10 Guide
ICD-10 CodesO23.43

O23.43

Billable

Unspecified infection of urinary tract in pregnancy, third trimester

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

Code Description

ICD-10 O23.43 is a billable code used to indicate a diagnosis of unspecified infection of urinary tract in pregnancy, third trimester.

Key Diagnostic Point:

Unspecified urinary tract infections (UTIs) during the third trimester of pregnancy can pose significant risks to both the mother and fetus. UTIs are common in pregnant women due to physiological changes, including increased urinary stasis and hormonal influences that affect the urinary tract. Symptoms may include dysuria, frequency, urgency, and suprapubic pain. If left untreated, UTIs can lead to complications such as pyelonephritis, preterm labor, and low birth weight. Diagnosis typically involves urinalysis and urine culture to identify the causative organism. Treatment often includes antibiotics that are safe for use during pregnancy, such as nitrofurantoin or amoxicillin, while avoiding those contraindicated, like tetracyclines and fluoroquinolones. Close monitoring and follow-up are essential to ensure resolution of the infection and to mitigate risks to maternal and fetal health.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptoms and presentation of UTIs in pregnancy.
  • Need for accurate documentation of infection type and severity.
  • Differentiation between acute and chronic infections.
  • Potential for overlapping symptoms with other pregnancy-related conditions.

Audit Risk Factors

  • Inadequate documentation of symptoms and treatment.
  • Failure to specify the type of urinary tract infection.
  • Misclassification of infection severity.
  • Inconsistent follow-up documentation.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Documentation should include patient history, presenting symptoms, diagnostic tests performed, and treatment plans.

Common Clinical Scenarios

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

Billing Considerations

Consideration of antibiotic safety in pregnancy and potential fetal effects.

Maternal-Fetal Medicine

Documentation Requirements

Detailed documentation of maternal and fetal health status, including any complications arising from the infection.

Common Clinical Scenarios

A high-risk pregnant patient with a history of recurrent UTIs presents with fever and flank pain.

Billing Considerations

Monitoring for potential complications such as preterm labor or fetal distress.

Coding Guidelines

Inclusion Criteria

Use O23.43 When
  • Follow the official ICD
  • CM coding guidelines for obstetric conditions, ensuring specificity in documentation and coding based on clinical findings

Exclusion Criteria

Do NOT use O23.43 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

87086CPT Code

Urine culture, bacterial

Clinical Scenario

Performed when a UTI is suspected in a pregnant patient.

Documentation Requirements

Document the reason for the culture and any previous UTI history.

Specialty Considerations

Consider the implications of antibiotic resistance in pregnant patients.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, improving the accuracy of diagnoses and treatment tracking for UTIs in pregnancy.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, improving the accuracy of diagnoses and treatment tracking for UTIs in pregnancy.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, improving the accuracy of diagnoses and treatment tracking for UTIs in pregnancy.

Resources

Clinical References

  • •
    CDC Guidelines for UTI Management in Pregnancy

Coding & Billing References

  • •
    CDC Guidelines for UTI Management in Pregnancy

Frequently Asked Questions

What are the common symptoms of a UTI in pregnancy?

Common symptoms include dysuria, increased frequency of urination, urgency, and suprapubic pain. Some women may also experience fever or flank pain.