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ICD-10 Guide
ICD-10 CodesA59.09

A59.09

Other urogenital trichomoniasis

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

Code Description

ICD-10 A59.09 is a billable code used to indicate a diagnosis of other urogenital trichomoniasis.

Key Diagnostic Point:

Urogenital trichomoniasis is a sexually transmitted infection caused by the protozoan parasite Trichomonas vaginalis. It primarily affects the urogenital tract, leading to symptoms such as vaginal discharge, itching, and discomfort in women, while men may experience urethritis and prostatitis. The infection is often asymptomatic, particularly in men, which complicates diagnosis and increases transmission risk. Diagnosis is typically made through laboratory testing of vaginal or urethral secretions. Treatment involves the use of antibiotics, most commonly metronidazole or tinidazole, which are effective in eradicating the parasite. Contact tracing is crucial in managing the spread of trichomoniasis, as partners of infected individuals should also be tested and treated to prevent reinfection. Public health initiatives emphasize the importance of safe sexual practices and regular screenings, particularly in high-risk populations. The condition can lead to complications such as increased susceptibility to HIV and adverse pregnancy outcomes if left untreated.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in symptoms and asymptomatic cases complicating diagnosis.
  • Need for laboratory confirmation which may not always be available.
  • Differentiation from other sexually transmitted infections.
  • Potential for co-infection with other STIs requiring careful documentation.

Audit Risk Factors

  • Inadequate documentation of laboratory results.
  • Failure to document patient symptoms accurately.
  • Lack of follow-up documentation for treatment efficacy.
  • Improper coding of co-infections or related conditions.

Specialty Focus

Medical Specialties

Infectious Disease

Documentation Requirements

Detailed patient history, laboratory test results, and treatment plans.

Common Clinical Scenarios

Diagnosis and management of trichomoniasis in patients with multiple STIs.

Billing Considerations

Consideration of patient demographics and sexual history for accurate coding.

Gynecology

Documentation Requirements

Documentation of symptoms, examination findings, and treatment protocols.

Common Clinical Scenarios

Management of symptomatic women presenting with vaginal discharge.

Billing Considerations

Need for thorough documentation of sexual history and partner treatment.

Coding Guidelines

Inclusion Criteria

Use A59.09 When
  • Follow the official ICD
  • CM coding guidelines, ensuring accurate documentation of the diagnosis, including laboratory confirmation and symptomatology
  • infection is documented

Exclusion Criteria

Do NOT use A59.09 When
  • Exclude codes for other STIs unless co

Related CPT Codes

87110CPT Code

Culture for Trichomonas vaginalis

Clinical Scenario

Used when laboratory confirmation of trichomoniasis is needed.

Documentation Requirements

Document the reason for the test and patient symptoms.

Specialty Considerations

Infectious disease specialists may order this test more frequently.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of trichomoniasis, improving data accuracy and facilitating better tracking of STIs.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of trichomoniasis, improving data accuracy and facilitating better tracking of STIs.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of trichomoniasis, improving data accuracy and facilitating better tracking of STIs.

Resources

Clinical References

  • •
    CDC Trichomoniasis Fact Sheet

Coding & Billing References

  • •
    CDC Trichomoniasis Fact Sheet

Frequently Asked Questions

What is the primary treatment for A59.09?

The primary treatment for other urogenital trichomoniasis is metronidazole or tinidazole, which are effective in eradicating the infection.