B37.81 Candidal esophagitis

Name of the Condition

• Candidal Esophagitis (ICD Code: B37.81)
• Technical term: Candidal esophagitis
• ICD-10 Code: B37.81

Summary

Candidal esophagitis is a fungal infection of the esophagus caused by Candida species, most commonly Candida albicans. It results from the overgrowth of yeast in the esophageal mucosa, leading to inflammation and tissue damage. The condition typically presents with dysphagia (difficulty swallowing) and odynophagia (painful swallowing) and may occur in individuals with weakened immune systems or other predisposing factors.

Causes

Candidal esophagitis occurs when Candida fungi, normally present in small amounts in the gastrointestinal tract, overgrow in the esophagus. This overgrowth can be triggered by disruptions to the body's microbial balance, such as antibiotic use, immunosuppression, or conditions that impair esophageal clearance. Invasive forms may arise from hematogenous spread or direct extension from adjacent sites.

Risk Factors

• Weakened immune system (e.g., HIV/AIDS, chemotherapy, immunosuppressive therapy).
• Prolonged use of broad-spectrum antibiotics or corticosteroids.
• Diabetes mellitus or poorly controlled blood sugar.
• Esophageal motility disorders (e.g., achalasia, scleroderma).
• Head and neck cancer or radiation therapy.
• Indwelling medical devices (e.g., nasogastric tubes).
• Malnutrition or systemic illness.

Symptoms

• Difficulty swallowing (dysphagia).
• Painful swallowing (odynophagia).
• Retrosternal chest pain.
• Nausea or vomiting.
• Oral thrush (candidiasis of the mouth).
• Weight loss or poor appetite.

Diagnosis

Diagnosis involves a combination of clinical evaluation and diagnostic testing. Endoscopy with esophageal biopsy or brush cytology may reveal Candida organisms or pseudomembranes. Laboratory cultures or histopathology can confirm the presence of Candida. Imaging studies (e.g., barium swallow) may show esophageal narrowing or ulceration but are less specific.

Treatment Options

Treatment typically includes antifungal medications, such as fluconazole or echinocandins, for moderate to severe cases. Topical agents (e.g., nystatin) may be used for mild infections. Underlying risk factors (e.g., immunosuppression) should be addressed to prevent recurrence. Supportive care, such as pain management and nutritional support, may be necessary.

Prognosis and Follow-Up

Prognosis depends on the severity of the infection and the patient's overall health. With appropriate treatment, most cases resolve within 1–2 weeks. Follow-up may include repeat endoscopy to confirm resolution, especially in immunocompromised patients. Recurrence is common in high-risk individuals and may require long-term antifungal prophylaxis.

Complications

• Esophageal strictures or narrowing.
• Bleeding or perforation.
• Disseminated candidiasis (rare but serious in immunocompromised patients).
• Malnutrition or dehydration due to swallowing difficulties.

Lifestyle & Prevention

• Maintain good oral hygiene.
• Manage underlying conditions (e.g., diabetes, immune disorders).
• Avoid unnecessary antibiotic use.
• Stay hydrated and eat a balanced diet.
• Seek prompt treatment for oral thrush to prevent esophageal spread.

When to Seek Professional Help

Seek medical attention if you experience persistent difficulty or pain with swallowing, unexplained weight loss, or signs of infection (e.g., fever, chest pain). Immunocompromised individuals should contact a healthcare provider at the first sign of symptoms.

Tips for Medical Coders

Document the presence of dysphagia, odynophagia, or endoscopic findings consistent with esophageal candidiasis. Include details about risk factors (e.g., immunosuppression) or comorbidities that support the diagnosis. Ensure the code B37.81 is used for Candidal esophagitis and not confused with other esophageal infections.