H16.423 Pannus (corneal), bilateral

Name of the Condition

• Pannus (corneal), bilateral

Summary

Pannus (corneal), bilateral is a condition characterized by the abnormal growth of fibrovascular tissue onto the corneas of both eyes, typically extending from the limbus (the border between the cornea and sclera). This tissue can impair vision and may result from chronic inflammation, injury, or ocular diseases. Evaluation is necessary to determine the underlying cause and appropriate management.

Causes

Corneal pannus in both eyes can be triggered by chronic inflammation, infection, or injury to the cornea. Common causes include autoimmune conditions like rheumatoid arthritis, chronic dry eye, or ocular surface disorders. It may also develop secondary to chemical burns, contact lens-related issues, or prior ocular surgery affecting both eyes.

Risk Factors

• Chronic ocular inflammation or infection in both eyes.
• Autoimmune diseases (e.g., rheumatoid arthritis).
• Prolonged contact lens use with poor hygiene in both eyes.
• History of eye trauma or surgery involving both eyes.
• Underlying systemic conditions affecting ocular health.
• Use of topical medications that disrupt corneal integrity in both eyes.

Symptoms

• Blurred or reduced vision in both eyes.
• Eye redness or irritation in both eyes.
• Sensitivity to light (photophobia) in both eyes.
• A feeling of a foreign object in both eyes.
• Visible fibrovascular tissue on the corneas (may be observed during exam).

Diagnosis

Diagnosis involves a comprehensive eye exam, including slit-lamp microscopy, to assess the extent of corneal involvement. Additional tests, such as corneal topography or tear film analysis, may be performed to evaluate underlying causes. A detailed patient history helps identify contributing factors.

Treatment Options

Treatment focuses on addressing the underlying cause and managing symptoms. Options may include topical anti-inflammatory medications, lubricating eye drops, or immunosuppressive agents for autoimmune-related cases. In severe instances, surgical intervention, such as corneal transplantation, may be considered.

Prognosis and Follow-Up

Prognosis depends on the underlying cause and severity of the condition. Early intervention can improve outcomes, but chronic cases may lead to permanent vision impairment. Regular follow-up with an eye care professional is essential to monitor progression and adjust treatment as needed.

Complications

Potential complications include permanent vision loss, corneal scarring, or increased risk of infection. Bilateral involvement may significantly impact daily functioning and quality of life.

Lifestyle & Prevention

Maintaining good ocular hygiene, avoiding irritants, and managing underlying conditions (e.g., autoimmune diseases) can help reduce risk. Proper contact lens care and protective eyewear in hazardous environments are recommended.

When to Seek Professional Help

Seek immediate medical attention if symptoms worsen, vision deteriorates rapidly, or signs of infection (e.g., increased redness, discharge) occur. Regular eye exams are advised for those with risk factors.

Tips for Medical Coders

Use H16.423 for bilateral corneal pannus. Document the bilateral nature of the condition and any underlying causes or contributing factors. Ensure clinical notes support the diagnosis and specify whether the condition is active or chronic.