A59.02 Trichomonal prostatitis

Name of the Condition

• Trichomonal prostatitis (ICD-10 code: A59.02)

Summary

Trichomonal prostatitis is a sexually transmitted infection (STI) caused by the protozoan parasite Trichomonas vaginalis that specifically affects the prostate gland. It results in inflammation of the prostate and may be asymptomatic or cause urinary or genital symptoms. While more commonly diagnosed in women, men can also be infected, and the parasite can colonize the prostate.

Causes

Trichomonal prostatitis is caused by the single-celled parasite Trichomonas vaginalis. Transmission occurs primarily through sexual contact, including vaginal intercourse. The parasite can survive on moist surfaces but is most commonly spread through direct person-to-person contact.

Risk Factors

• Having multiple sexual partners
• A history of other sexually transmitted infections
• Lack of consistent barrier protection during sexual activity
• Not using condoms or other preventive measures

Symptoms

• Urinary symptoms: Frequent or painful urination, urgency, or weak stream.
• Genital discomfort: Pelvic or perineal pain, discomfort during ejaculation.
• Possible asymptomatic infection in some cases.

Diagnosis

Diagnosis involves clinical evaluation of symptoms, followed by laboratory testing. Common methods include nucleic acid amplification tests (NAATs) or wet mount microscopy of prostate secretions or urine to detect the parasite. A physical exam may also assess prostate tenderness or swelling.

Treatment Options

Treatment typically involves oral antimicrobial therapy, such as metronidazole or tinidazole, to eliminate the parasite. Sexual partners should also be treated to prevent reinfection. Follow-up testing may be recommended to confirm resolution.

Prognosis and Follow-Up

With appropriate treatment, the prognosis is generally good, and symptoms often resolve. Follow-up may include retesting to ensure the infection has cleared, especially if symptoms persist. Untreated cases can lead to chronic inflammation or recurrent symptoms.

Complications

• Chronic prostatitis or persistent symptoms.
• Potential spread to other genitourinary structures.
• Increased risk of reinfection if partners are not treated.

Lifestyle & Prevention

• Practice safe sex with consistent barrier protection (e.g., condoms).
• Limit sexual partners and ensure regular STI screening.
• Maintain good genital hygiene to reduce infection risk.

When to Seek Professional Help

Seek medical attention if you experience persistent urinary symptoms, genital pain, or discharge, especially if you have a history of STIs or unprotected sex.

Tips for Medical Coders

Use code A59.02 for trichomonal prostatitis when documentation specifies inflammation of the prostate due to Trichomonas vaginalis. Ensure the diagnosis is clearly linked to the prostate, as opposed to other urogenital sites, to justify the code.