Corneal edema secondary to contact lens, bilateral

This code signifies swelling of the cornea in both eyes, directly attributed to the use of contact lenses. The edema results from insufficient oxygen reaching the corneal tissue, often due to overwear, poor fit, or improper care of contact lenses. This condition can lead to blurred vision, discomfort, and increased risk of infection.

Apply this code when documentation clearly indicates bilateral corneal edema and explicitly links its etiology to contact lens wear. This diagnosis is typically made following an ophthalmological examination, including slit-lamp biomicroscopy, where corneal thickening and haziness are observed in both eyes in a contact lens wearer.

• Ensure the medical record specifies "bilateral" involvement; otherwise, use the appropriate unilateral code.
• Verify that the documentation explicitly states the edema is "secondary to contact lens" use, not another cause.
• Consider sequencing this code after any underlying conditions contributing to contact lens intolerance, if applicable.