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ICD-10 Guide
ICD-10 CodesO23.9

O23.9

Billable

Unspecified genitourinary tract infection in pregnancy

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

Code Description

ICD-10 O23.9 is a billable code used to indicate a diagnosis of unspecified genitourinary tract infection in pregnancy.

Key Diagnostic Point:

Genitourinary tract infections (UTIs) during pregnancy are common and can pose significant risks to both the mother and fetus if left untreated. These infections may include cystitis, pyelonephritis, and asymptomatic bacteriuria. Symptoms can range from mild urinary frequency and urgency to severe flank pain and fever, indicating a potential kidney infection. Diagnosis typically involves urinalysis and urine culture to identify the causative organism. Treatment is crucial as untreated UTIs can lead to complications such as preterm labor, low birth weight, and increased risk of maternal morbidity. Antibiotic therapy is often necessary, and the choice of antibiotic must consider safety during pregnancy. Commonly used antibiotics include nitrofurantoin and amoxicillin, which are generally considered safe, while others like tetracycline should be avoided due to potential teratogenic effects. Proper management and follow-up are essential to ensure resolution of the infection and to monitor for any potential complications.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptoms and presentation of UTIs in pregnant patients.
  • Need for accurate documentation of infection type and severity.
  • Differentiation between acute and chronic infections.
  • Consideration of antibiotic safety and potential side effects.

Audit Risk Factors

  • Inadequate documentation of symptoms and treatment plans.
  • Failure to specify the type of genitourinary infection.
  • Inconsistent coding of antibiotic therapy used.
  • Lack of follow-up documentation post-treatment.

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 reveals bacteria, leading to a diagnosis of UTI.

Billing Considerations

Coders must be aware of the implications of antibiotic use in pregnancy and document any adverse reactions.

Maternal-Fetal Medicine

Documentation Requirements

Comprehensive 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 is monitored closely for signs of infection.

Billing Considerations

High-risk patients may require additional testing and follow-up, impacting coding and billing.

Coding Guidelines

Inclusion Criteria

Use O23.9 When
  • Coders should follow the official ICD
  • CM guidelines for obstetric coding, ensuring that the diagnosis is linked to the pregnancy and that any complications are documented appropriately

Exclusion Criteria

Do NOT use O23.9 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

87086CPT Code

Urine culture, bacterial

Clinical Scenario

Used when a urine culture is performed to confirm a UTI diagnosis in a pregnant patient.

Documentation Requirements

Document the reason for the culture and any relevant clinical findings.

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 genitourinary infections in pregnancy, improving the accuracy of data collection and reimbursement processes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of genitourinary infections in pregnancy, improving the accuracy of data collection and reimbursement processes.

Reimbursement & Billing Impact

reimbursement processes.

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 genitourinary tract infection in pregnancy?

Common symptoms include urinary urgency, frequency, dysuria, and in more severe cases, flank pain and fever. It's important for pregnant patients to report any such symptoms promptly.