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ICD-10 Guide
ICD-10 CodesO23.591

O23.591

Billable

Infection of other part of genital tract in pregnancy, first trimester

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

Code Description

ICD-10 O23.591 is a billable code used to indicate a diagnosis of infection of other part of genital tract in pregnancy, first trimester.

Key Diagnostic Point:

Infections of the genital tract during pregnancy can pose significant risks to both the mother and the developing fetus. The code O23.591 specifically refers to infections occurring in the first trimester, which is a critical period for fetal development. Common infections in this category may include bacterial vaginosis, vulvovaginal candidiasis, and sexually transmitted infections (STIs) such as chlamydia and gonorrhea. These infections can lead to complications such as preterm labor, low birth weight, and even miscarriage if left untreated. It is essential for healthcare providers to accurately diagnose and treat these infections promptly. Treatment often involves the use of antibiotics, which must be selected carefully to ensure safety for both the mother and the fetus. Certain antibiotics, such as penicillins and cephalosporins, are generally considered safe during pregnancy, while others may pose risks. Therefore, understanding the implications of these infections and their treatment is crucial for optimal maternal and fetal health.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between types of infections affecting the genital tract.
  • Understanding the implications of antibiotic use during pregnancy.
  • Recognizing the potential complications associated with untreated infections.
  • Navigating the documentation requirements for various types of infections.

Audit Risk Factors

  • Inadequate documentation of infection type and treatment.
  • Failure to specify the trimester of pregnancy.
  • Incorrect coding of co-existing conditions.
  • Lack of clarity in the clinical rationale for antibiotic choice.

Specialty Focus

Medical Specialties

Obstetrics and Gynecology

Documentation Requirements

Detailed patient history, including symptoms, diagnostic tests, and treatment plans.

Common Clinical Scenarios

A pregnant patient presenting with symptoms of a vaginal infection, requiring diagnostic testing and treatment.

Billing Considerations

Awareness of the safety profiles of antibiotics and their effects on pregnancy.

Maternal-Fetal Medicine

Documentation Requirements

Comprehensive documentation of maternal and fetal health, including any high-risk factors.

Common Clinical Scenarios

Management of a high-risk pregnancy complicated by a genital tract infection.

Billing Considerations

Close monitoring of both maternal and fetal outcomes in the presence of infections.

Coding Guidelines

Inclusion Criteria

Use O23.591 When
  • According to official coding guidelines, O23
  • 591 should be used when a patient is diagnosed with an infection of the genital tract during the first trimester of pregnancy
  • Coders must ensure that the diagnosis is supported by appropriate clinical documentation and that the infection is not classified under other specific codes

Exclusion Criteria

Do NOT use O23.591 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

99213CPT Code

Established patient office visit, level 3

Clinical Scenario

Used for follow-up visits after treatment of genital tract infections.

Documentation Requirements

Documentation of patient history, examination findings, and treatment plan.

Specialty Considerations

Obstetricians should ensure that the visit is clearly related to the management of the infection.

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, including infections. This specificity helps in better tracking of maternal and fetal outcomes and improves the quality of care provided.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, including infections. This specificity helps in better tracking of maternal and fetal outcomes and improves the quality of care provided.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of obstetric conditions, including infections. This specificity helps in better tracking of maternal and fetal outcomes and improves the quality of care provided.

Resources

Clinical References

  • •
    CDC Guidelines for Treating STIs in Pregnancy

Coding & Billing References

  • •
    CDC Guidelines for Treating STIs in Pregnancy

Frequently Asked Questions

What are the common infections coded under O23.591?

Common infections include bacterial vaginosis, vulvovaginal candidiasis, and sexually transmitted infections such as chlamydia and gonorrhea. Each of these infections has specific treatment protocols that must be documented.