B37.3 Candidiasis of vulva and vagina

Name of the Condition

• Candidiasis of Vulva and Vagina (ICD Code: B37.3)
• Technical term: Candidiasis of vulva and vagina
• ICD-10 Code: B37.3

Summary

Candidiasis of the vulva and vagina is a fungal infection caused by Candida species, most commonly Candida albicans. It affects the vulvar and vaginal mucosa, leading to inflammation and overgrowth of yeast. This condition is part of the broader candidiasis category and is often referred to as a yeast infection. The infection arises when the normal balance of microorganisms in the genital area is disrupted, allowing Candida to proliferate.

Causes

Candidiasis of the vulva and vagina occurs due to an overgrowth of Candida fungi, which are naturally present in small amounts in the genital tract. This overgrowth can be triggered by factors such as antibiotic use, hormonal changes (e.g., pregnancy or oral contraceptives), or disruptions to the local microbiome. Reduced immune function or alterations in vaginal pH may also contribute to the development of the infection.

Risk Factors

• Use of antibiotics or corticosteroids.
• Pregnancy or hormonal therapy.
• Diabetes mellitus or poorly controlled blood sugar.
• Weakened immune system (e.g., HIV/AIDS, chemotherapy).
• Use of vaginal douches or irritants.
• Tight or non-breathable clothing.
• Recent sexual activity (though not a direct cause).

Symptoms

• Itching, redness, or irritation of the vulva.
• Thick, white, cottage cheese-like vaginal discharge.
• Pain or discomfort during urination or intercourse.
• Swelling or soreness of the vulvar area.
• Redness or rash on the vulva.

Diagnosis

Diagnosis typically involves a clinical evaluation, including a pelvic examination to assess symptoms and physical findings. Laboratory tests, such as a vaginal swab for microscopy or culture, may be performed to confirm the presence of Candida. A KOH (potassium hydroxide) preparation can help visualize yeast cells under a microscope, aiding in diagnosis.

Treatment Options

Treatment may include antifungal medications, such as topical creams (e.g., clotrimazole, miconazole) or oral tablets (e.g., fluconazole). Over-the-counter options are available for mild cases, while prescription treatments are used for recurrent or severe infections. In some cases, a single dose of oral medication may be sufficient, while others require longer courses.

Prognosis and Follow-Up

With appropriate treatment, candidiasis of the vulva and vagina usually resolves within a few days to a week. Recurrence is common in some individuals, particularly those with underlying risk factors. Follow-up may be recommended if symptoms persist or recur frequently, to address potential contributing factors or adjust treatment.

Complications

Complications are rare but may include chronic or recurrent infections, skin fissures from scratching, or secondary bacterial infections. In immunocompromised individuals, the infection could potentially spread to other areas, though this is uncommon.

Lifestyle & Prevention

• Avoid douching or using scented hygiene products.
• Wear breathable, cotton underwear.
• Maintain good genital hygiene.
• Manage blood sugar levels if diabetic.
• Consider probiotics to support vaginal flora balance.
• Avoid tight-fitting clothing.

When to Seek Professional Help

Seek medical attention if symptoms are severe, persistent, or recurrent. Consult a healthcare provider if over-the-counter treatments fail, or if there is unusual discharge, fever, or pelvic pain. Pregnant individuals should seek care promptly for proper management.

Tips for Medical Coders

When coding B37.3, ensure documentation specifies the involvement of both the vulva and vagina. Note any associated symptoms or treatments, as these may impact coding accuracy. Verify that the diagnosis aligns with clinical findings and that no other conditions (e.g., bacterial vaginosis) are documented, which could affect code assignment.