Diffuse secondary atrophy of choroid, bilateral

This code describes a condition where the choroid, a vascular layer of the eye, has undergone widespread thinning and degeneration in both eyes due to an underlying secondary cause. This atrophy results in a loss of choroidal tissue, which can impact retinal health and vision.

Use this code when documentation explicitly states diffuse secondary atrophy of the choroid affecting both eyes. This typically occurs as a consequence of other ocular or systemic diseases, such as high myopia, inflammatory conditions, or certain retinal dystrophies.

• Ensure documentation specifies "diffuse" and "secondary" to differentiate from other forms of choroidal atrophy.
• Always code the underlying primary condition causing the secondary atrophy first, if known and documented.
• Verify laterality; this code is specifically for bilateral involvement.