A54.6 Gonococcal infection of anus and rectum

Name of the Condition

• Gonococcal infection of anus and rectum

Summary

Gonococcal infection of the anus and rectum is a sexually transmitted infection caused by Neisseria gonorrhoeae. It involves inflammation of the anal and rectal mucosal surfaces, typically resulting from receptive anal intercourse with an infected partner. The condition may present with or without symptoms and is characterized by localized infection and potential tissue damage.

Causes

The infection is caused by Neisseria gonorrhoeae, a bacterium transmitted through sexual contact. The bacteria colonize the mucosal surfaces of the anus and rectum, leading to infection. Transmission occurs via unprotected receptive anal sex with an infected partner.

Risk Factors

• Unprotected receptive anal intercourse
• History of prior gonococcal infections
• Young age (15–24 years)
• Presence of other sexually transmitted infections
• Lack of consistent condom use
• Multiple sexual partners

Symptoms

• Anal discharge (purulent or mucoid)
• Rectal pain or discomfort
• Itching or irritation around the anus
• Bleeding during bowel movements
• Tenesmus (urgent or painful bowel movements)
• Asymptomatic cases are common

Diagnosis

Diagnosis involves clinical evaluation and laboratory testing. Nucleic acid amplification tests (NAATs) on rectal swabs are the preferred method for detection. Gram stain and culture may also be used, though NAATs offer higher sensitivity. Clinical assessment includes a physical examination of the anal and rectal areas.

Treatment Options

Treatment typically involves a single-dose antibiotic regimen, such as ceftriaxone combined with azithromycin, to cover Neisseria gonorrhoeae and potential co-infections. Follow-up testing is recommended to confirm cure, especially in cases of reinfection or treatment failure. Sexual partners should be evaluated and treated to prevent transmission.

Prognosis and Follow-Up

With appropriate treatment, the prognosis is generally good, and symptoms often resolve within a few days. Follow-up testing is advised to ensure eradication of the infection, particularly if symptoms persist or reinfection is suspected. Untreated cases may lead to complications, including chronic inflammation or spread to other sites.

Complications

• Chronic anal or rectal inflammation
• Abscess formation
• Fistula development
• Increased risk of HIV transmission
• Disseminated gonococcal infection (rare)

Lifestyle & Prevention

• Consistent use of condoms during anal intercourse
• Regular screening for sexually transmitted infections, especially for those with multiple partners
• Avoidance of unprotected sexual contact with infected individuals
• Prompt treatment of sexual partners to prevent reinfection

When to Seek Professional Help

Seek medical attention if you experience persistent anal discharge, pain, bleeding, or other symptoms suggestive of infection. Early diagnosis and treatment are important to prevent complications and reduce transmission risk.

Tips for Medical Coders

When coding for gonococcal infection of the anus and rectum (A54.6), ensure documentation supports the anatomical site (anus/rectum) and confirms the infection is caused by Neisseria gonorrhoeae. Verify that the code aligns with clinical findings and laboratory results. Avoid using this code for non-gonococcal infections or infections at other sites.