Trichomoniasis
Also known as: Trich
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In short
Trichomoniasis is a sexually transmitted infection caused by a parasite that spreads from person to person during sex. Many people do not have symptoms, but when they occur, they can include vaginal discharge, discomfort, odor, painful urination, and itching in women, or penile irritation, burning, and discharge in men. The infection can increase the risk of getting or spreading other sexually transmitted infections, and pregnant women with the condition are more likely to give birth too early or have babies with a low birth weight. Lab tests can tell if the infection is present, and treatment is with antibiotics for both the infected person and their partner.
Source: MedlinePlus, National Library of Medicine.
AI-generated summary of the sources cited on this page, checked automatically against them. Not reviewed by a clinician; not medical advice.
Codes
Description
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 soreness of the vagina and vulva
Most men do not have symptoms. If they do, they may have:
- Itching or irritation inside the penis
- Burning after urination or ejaculation
- Discharge from the penis
Trichomoniasis can increase the risk of getting or spreading other sexually transmitted infections. Pregnant women with trichomoniasis are more likely to give birth too early, and their babies are more likely have a low birth weight.
Lab tests can tell if you have the infection. Treatment is with antibiotics. If you are infected, you and your partner must be treated.
Correct usage of latex condoms greatly reduces, but does not eliminate, the risk of catching or spreading trichomoniasis. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.
Centers for Disease Control and Prevention
Next to it in ICD-10
- A54Gonorrhoea
- A55Lymphogranuloma venereum
- A56Chlamydia (sexually transmitted)
- A60Genital herpes
- A78Q fever
- A80Polio (acute poliomyelitis)
Neighbouring codes in the classification, not a medical link.
External resources
Questions
What is the ICD-10 code for Trichomoniasis?
A59 (WHO, International Classification of Diseases, 10th Revision).
What is the ICD-11 code for Trichomoniasis?
1A92: Trichomoniasis (WHO, ICD-11 for Mortality and Morbidity Statistics).
Sources and attribution
- ICD-11 for Mortality and Morbidity Statistics, © World Health Organization, licensed under CC BY-ND 3.0 IGO.
- Source: MedlinePlus, National Library of Medicine.
- Names other than the official source titles: Anpheros translations and plain-language names, made with AI assistance and checked automatically; the source names are in English.
- ICD-10 codes and titles © World Health Organization. Source: WHO, International Classification of Diseases, 10th Revision (2019).
Anpheros Search catalog 2026.10.5, published 17 October 2026. About the data →
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