2026 ICD-10-CM Diagnosis Code A59Trichomoniasis
A59 is a non-billable ICD-10-CM category code for trichomoniasis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A59.00, A59.01, A59.02, and A59.03.
Code Identity
Code Classification
Specific Coding for TrichomoniasisOverview
Non-specific codes like A59 require more characters. Use one of these billable codes instead:
A59.0 for Urogenital trichomoniasis
Use A59.00 for Urogenital trichomoniasis, unspecified
Use A59.01 for Trichomonal vulvovaginitis
Use A59.02 for Trichomonal prostatitis
Use A59.03 for Trichomonal cystitis and urethritis
Use A59.09 for Other urogenital trichomoniasis
Use A59.8 for Trichomoniasis of other sites
Use A59.9 for Trichomoniasis, unspecified
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Type 2 Excludes
- intestinal trichomoniasis A07.8
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Patient EducationClinical
Trichomoniasis
Trichomoniasis is a sexually transmitted infection (STI) caused by a parasite. It spreads from person to person during sex. Many people do not have any symptoms. If you do get symptoms, they usually happen within 5 to 28 days after being infected.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
