H18.13 Bullous keratopathy, bilateral

Name of the Condition

• Bullous Keratopathy, Bilateral
• ICD Code: H18.13

Summary

Bullous keratopathy is a condition characterized by fluid-filled blisters (bullae) on the cornea, the clear front surface of the eye. These blisters can cause pain, discomfort, and visual disturbances due to corneal edema. The condition often results from damage to the corneal endothelium, which impairs its ability to maintain corneal clarity.

Causes

Bullous keratopathy typically arises from corneal endothelial dysfunction, which may be caused by prior eye surgery (such as cataract extraction), trauma, or inflammatory conditions. It can also occur secondary to other ocular diseases or systemic conditions affecting the cornea.

Risk Factors

• Previous intraocular surgery (e.g., cataract surgery)
• Corneal trauma or injury
• Chronic corneal inflammation or edema
• Underlying endothelial dystrophies
• Prolonged use of certain topical medications

Symptoms

• Pain or discomfort in the eye
• Blurred or distorted vision
• Sensitivity to light (photophobia)
• Excessive tearing or discharge
• Visible blisters on the cornea (may be seen with a slit lamp)

Diagnosis

Diagnosis involves a comprehensive eye examination, including slit-lamp microscopy to assess corneal edema and bullae. Additional tests, such as corneal pachymetry (thickness measurement) or specular microscopy (endothelial cell analysis), may be used to evaluate corneal health and function.

Treatment Options

Treatment focuses on managing symptoms and addressing underlying causes. Options may include lubricating eye drops, bandage contact lenses, or surgical interventions like corneal transplantation in severe cases.

Prognosis and Follow-Up

Prognosis depends on the severity and underlying cause. Regular follow-up with an eye care professional is essential to monitor progression and adjust treatment as needed.

Complications

Potential complications include persistent pain, vision loss, corneal scarring, or infection if bullae rupture.

Lifestyle & Prevention

Protecting the eyes from injury, managing underlying conditions, and avoiding prolonged use of irritating topical medications may help reduce risk.

When to Seek Professional Help

Seek immediate medical attention if experiencing sudden vision changes, severe eye pain, or signs of infection (e.g., redness, discharge).

Tips for Medical Coders

Document the bilateral nature of the condition clearly in the medical record. Ensure the diagnosis is supported by clinical findings and specify if the condition is primary or secondary to another ocular issue.