Secondary corneal edema, left eye

This code signifies swelling of the cornea in the left eye that is a consequence of another underlying ocular or systemic condition. This edema results from fluid accumulation within the corneal layers, leading to blurred vision and discomfort. It is not the primary disease process but rather a complication.

Use this code when documentation clearly indicates corneal edema in the left eye that is secondary to another diagnosed condition, such as uveitis, glaucoma, or following intraocular surgery. Supporting documentation should specify the laterality and the secondary nature of the edema.

• Always code the underlying primary condition first, followed by this code for the secondary corneal edema.
• Ensure documentation specifies "secondary" to differentiate from primary corneal dystrophies or other primary corneal diseases.
• Verify laterality; separate codes exist for the right eye, bilateral, and unspecified.