A59

Non-billable

Trichomoniasis

A59 is the ICD-10-CM code for Trichomoniasis. It is a non-billable category code — use a more specific child code such as A59.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
3
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

What this means — in plain language

MedlinePlus · NIH

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. It can cause vaginitis in women. Symptoms include: Yellow-green or gray discharge from the vagina Discomfort during sex Vaginal odor Painful urination Itching burning, and…

Read more about Trichomoniasis at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes2 — not included here

  • intestinal trichomoniasis (A07.8)

Frequently asked questions

What is ICD-10 code A59?
A59 is the ICD-10-CM code for "Trichomoniasis". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A59 a billable code?
No — A59 is a non-billable header code. Use a more specific child code (such as A59.0) for billing.
What are the subcodes of A59?
A59 has 3 more specific child codes, including A59.0, A59.8, A59.9.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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