A58 Granuloma inguinale

Name of the Condition

• Granuloma inguinale (ICD-10 Code: A58)

Summary

Granuloma inguinale is a chronic bacterial infection that primarily affects the skin and mucous membranes of the genital and perianal regions. It is characterized by the development of painless, progressive ulcerative lesions that can lead to tissue destruction if left untreated. The condition is caused by Klebsiella granulomatis (formerly Calymmatobacterium granulomatis) and is transmitted through direct contact with infected lesions or bodily fluids.

Causes

Granuloma inguinale is caused by the bacterium Klebsiella granulomatis. Transmission occurs through direct contact with an infected individual’s lesions, typically during sexual activity, or through contact with contaminated materials. The bacteria invade the skin and mucous membranes, leading to the formation of granulomatous ulcers.

Risk Factors

• Unprotected sexual contact with an infected person.
• Residence in or travel to regions with high prevalence of the infection (e.g., tropical and subtropical areas).
• Weakened immune system, which may increase susceptibility to severe disease.
• Poor personal hygiene or lack of access to healthcare in endemic regions.

Symptoms

• Painless, progressive ulcers with a beefy red appearance and raised edges.
• Lesions may appear on the genitals, perianal area, or surrounding skin.
• Painless inguinal lymphadenopathy (swollen lymph nodes) in some cases.
• Secondary bacterial infection or tissue destruction if lesions are left untreated.

Diagnosis

Diagnosis is based on clinical presentation, including the characteristic ulcerative lesions, and confirmed through laboratory testing. Microscopic examination of lesion scrapings or biopsies may reveal Donovan bodies (intracellular bacteria). Nucleic acid amplification tests (NAATs) or culture can also be used to identify Klebsiella granulomatis.

Treatment Options

• Antibiotics: Oral antibiotics such as azithromycin, doxycycline, or ciprofloxacin are the primary treatment. Duration of therapy is typically 3 weeks or until lesions heal.
• Topical Treatments: In some cases, topical antibiotics may be used to manage secondary infections.
• Monitoring: Regular follow-up to ensure complete resolution of lesions and to monitor for recurrence.

Prognosis and Follow-Up

With appropriate antibiotic treatment, granuloma inguinale generally has a good prognosis, and lesions heal without scarring in most cases. Follow-up is recommended to confirm resolution and to screen for reinfection or complications. Untreated cases may lead to tissue destruction or secondary infections.

Complications

• Tissue destruction and scarring of affected areas.
• Secondary bacterial infections.
• Chronic ulcers that may persist for months or years.
• Rarely, dissemination to other body sites, leading to systemic involvement.

Lifestyle & Prevention

• Practice safe sex by using barrier methods (e.g., condoms) to reduce transmission risk.
• Maintain good personal hygiene, especially in endemic regions.
• Seek prompt medical care for any genital or perianal lesions to prevent progression.
• Avoid contact with known infected individuals or materials.

When to Seek Professional Help

• If you develop painless ulcers or sores in the genital or perianal area.
• If lesions persist or worsen despite home care.
• If you experience fever, swelling, or signs of secondary infection.
• If you have had unprotected sexual contact with a partner diagnosed with granuloma inguinale.

Tips for Medical Coders

When coding for granuloma inguinale, use ICD-10-CM code A58. Ensure documentation includes the presence of characteristic ulcerative lesions, confirmation of Klebsiella granulomatis (if available), and details of treatment or complications. Note the anatomical location of lesions and any associated symptoms to support accurate coding.