H18.443 Keratomalacia, bilateral

Name of the Condition

• Keratomalacia, bilateral
• ICD Code: H18.443

Summary

Keratomalacia, bilateral, is a severe degenerative condition affecting both corneas, characterized by softening and necrosis of corneal tissue. This condition often leads to perforation and vision loss if left untreated. It is typically associated with vitamin A deficiency and can result in irreversible structural damage to the eyes.

Causes

The primary cause of keratomalacia is vitamin A deficiency, which impairs corneal epithelial integrity and repair. This deficiency may stem from malnutrition, malabsorption syndromes, or chronic liver disease. In some cases, it can be exacerbated by infections or inflammatory conditions affecting the eyes.

Risk Factors

• Severe vitamin A deficiency
• Malnutrition or poor dietary intake
• Conditions affecting nutrient absorption (e.g., celiac disease, cystic fibrosis)
• Chronic liver disease
• Prolonged diarrhea or gastrointestinal disorders
• Infections (e.g., measles, whooping cough) in malnourished individuals

Symptoms

• Severe eye pain or discomfort in both eyes
• Blurred or rapidly deteriorating vision
• Sensitivity to light (photophobia)
• Redness and swelling of the eyes
• Corneal opacity or clouding
• Possible discharge or tearing

Diagnosis

Diagnosis involves a thorough eye examination, including slit-lamp biomicroscopy to assess corneal softening, necrosis, or perforation in both eyes. A detailed patient history, including dietary intake and systemic conditions, is essential. Laboratory tests to evaluate vitamin A levels may be performed to confirm deficiency.

Treatment Options

Treatment focuses on addressing the underlying vitamin A deficiency, typically with high-dose oral or intramuscular supplementation. Topical antibiotics may be used to prevent secondary infection, and lubricating eye drops can help manage discomfort. In severe cases, surgical intervention may be necessary to repair corneal perforation or restore structural integrity.

Prognosis and Follow-Up

Prognosis depends on the severity of the condition and the timeliness of treatment. Early intervention with vitamin A supplementation can prevent further damage and may allow for partial recovery of vision. Regular follow-up with an ophthalmologist is necessary to monitor corneal healing and address any complications.

Complications

• Corneal perforation
• Permanent vision loss
• Secondary bacterial or fungal infections
• Scarring of the cornea
• Blindness if left untreated

Lifestyle & Prevention

• Ensure adequate dietary intake of vitamin A-rich foods (e.g., carrots, leafy greens, liver)
• Address underlying malabsorption or malnutrition with medical guidance
• Promptly treat infections or inflammatory conditions affecting the eyes
• Avoid self-medication with eye drops without professional advice

When to Seek Professional Help

Seek immediate medical attention if you experience sudden vision loss, severe eye pain, or signs of corneal damage (e.g., clouding, redness). Early intervention is critical to prevent irreversible complications.

Tips for Medical Coders

Document the bilateral nature of the condition clearly in the medical record. Ensure that vitamin A deficiency or related systemic factors are noted if present, as these may influence coding and clinical context. Verify that the diagnosis aligns with clinical findings and that the code H18.443 is used exclusively for bilateral keratomalacia.