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ICD-10 Guide
ICD-10 CodesA59.01

A59.01

Trichomonal vulvovaginitis

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 A59.01 is a billable code used to indicate a diagnosis of trichomonal vulvovaginitis.

Key Diagnostic Point:

Trichomonal vulvovaginitis is a sexually transmitted infection caused by the protozoan parasite Trichomonas vaginalis. It primarily affects the urogenital tract, leading to inflammation of the vulva and vagina. Patients may present with symptoms such as itching, burning, and a frothy, malodorous discharge. The infection is often asymptomatic, particularly in men, which can contribute to its spread. Diagnosis is typically made through laboratory testing, including wet mount microscopy or nucleic acid amplification tests (NAATs). Treatment usually involves the administration of metronidazole or tinidazole, with both partners needing treatment to prevent reinfection. Contact tracing is crucial in managing trichomonal infections, as it helps identify and treat sexual partners, thereby reducing transmission rates. Education on safe sexual practices is also an essential component of management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between trichomonal and other types of vaginitis.
  • Understanding the asymptomatic nature of the infection in some patients.
  • The need for contact tracing and partner treatment.
  • Variability in presentation and symptoms among different populations.

Audit Risk Factors

  • Inadequate documentation of symptoms and patient history.
  • Failure to document partner treatment and contact tracing efforts.
  • Misdiagnosis due to overlapping symptoms with other STIs.
  • Lack of follow-up documentation post-treatment.

Specialty Focus

Medical Specialties

Gynecology

Documentation Requirements

Detailed patient history, including sexual history and symptoms.

Common Clinical Scenarios

Patients presenting with vaginal discharge, itching, or burning.

Billing Considerations

Ensure documentation includes partner treatment and follow-up plans.

Infectious Disease

Documentation Requirements

Comprehensive records of laboratory tests and treatment regimens.

Common Clinical Scenarios

Management of recurrent trichomoniasis and co-infections.

Billing Considerations

Focus on patient education regarding prevention and safe practices.

Coding Guidelines

Inclusion Criteria

Use A59.01 When
  • According to ICD
  • 10 guidelines, A59
  • 01 should be used when the diagnosis of trichomonal vulvovaginitis is confirmed
  • It is important to document the presence of symptoms and any relevant laboratory findings

Exclusion Criteria

Do NOT use A59.01 When
  • Exclusion criteria include other types of vaginitis that may present similarly

Related CPT Codes

87520CPT Code

Nucleic acid amplification test for Trichomonas vaginalis

Clinical Scenario

Used when laboratory confirmation of trichomoniasis is needed.

Documentation Requirements

Document the reason for testing and patient consent.

Specialty Considerations

Ensure proper coding for the test based on the specialty performing it.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of trichomonal infections, improving data accuracy and facilitating better tracking of STIs. This specificity aids in public health reporting and management.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of trichomonal infections, improving data accuracy and facilitating better tracking of STIs. This specificity aids in public health reporting and management.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of trichomonal infections, improving data accuracy and facilitating better tracking of STIs. This specificity aids in public health reporting and management.

Resources

Clinical References

  • •
    CDC - Trichomoniasis

Coding & Billing References

  • •
    CDC - Trichomoniasis

Frequently Asked Questions

What are the common symptoms of trichomonal vulvovaginitis?

Common symptoms include itching, burning, and a frothy, foul-smelling discharge. However, many individuals may be asymptomatic.

How is trichomonal vulvovaginitis treated?

Treatment typically involves metronidazole or tinidazole, and it is important to treat both partners to prevent reinfection.

What is the importance of contact tracing in trichomonal infections?

Contact tracing helps identify and treat sexual partners, reducing the risk of reinfection and further transmission of the infection.