A59
⚠ Non-billable
Trichomoniasis
ICD-10-CM · FY2026 · Certain Infectious and Parasitic Diseases
Code
A59
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Certain Infectious and Parasitic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code A59?
ICD-10-CM code A59 represents Trichomoniasis. It is a non-billable header code requiring a more specific subcategory in the Certain Infectious and Parasitic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is A59 billable?
No. A59 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is A59 in?
A59 belongs to the Certain Infectious and Parasitic Diseases chapter (A00–B99) of ICD-10-CM.
Related codes in the A59 category
A59.0
Urogenital trichomoniasis
Non-billable
A59.8
Trichomoniasis of other sites
Billable
A59.9
Trichomoniasis, unspecified
Billable
A59.00
Urogenital trichomoniasis, unspecified
Billable
A59.01
Trichomonal vulvovaginitis
Billable
A59.02
Trichomonal prostatitis
Billable
A59.03
Trichomonal cystitis and urethritis
Billable
A59.09
Other urogenital trichomoniasis
Billable
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