Marginal corneal ulcer, right eye

This code signifies an inflammatory lesion located at the periphery of the cornea in the right eye. It is characterized by a localized defect in the corneal epithelium and stroma, often associated with an underlying systemic condition or ocular surface disease.

Apply this code when documentation specifies a marginal corneal ulcer affecting the right eye. This diagnosis is typically supported by slit-lamp examination findings detailing the location and characteristics of the ulcer. Ensure laterality is clearly documented.

• Always verify laterality (right, left, bilateral, unspecified) from the physician's documentation.
• Distinguish from central corneal ulcers (H16.03-) or other types of keratitis.
• Look for associated systemic conditions or infectious agents that may require additional coding.