ICD-10 Code A59.09 – Other urogenital trichomoniasis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A59.09 – Other urogenital trichomoniasis
What it is
This code identifies a trichomonas infection involving the urogenital tract that does not fit a more specific category. Use it when documentation states other urogenital trichomoniasis or a similar nonspecific trichomonal infection.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings in trichomoniasis include genital irritation, abnormal discharge, dysuria, or discomfort, but you should code only what the record supports.
When to use this code
Use A59.09 when the provider documents trichomoniasis affecting the urogenital tract and specifies another form not captured by a more exact code. It may also apply when the site is urogenital but the record does not support a more specific subtype. Check documentation if the note is vague or only says “trichomonas infection.”
Do not use for
Do not use this code for intestinal trichomoniasis or for a clearly specified urogenital trichomoniasis code when a more exact diagnosis is documented. If the organism or site is not confirmed, check documentation.
Coding tip
Code the most specific trichomoniasis diagnosis documented, and verify whether the provider identified the urogenital site or another trichomonal subtype.