Other retinoschisis and retinal cysts, bilateral

This code describes the presence of a splitting of the retinal layers (retinoschisis) or the formation of fluid-filled sacs on the retina (retinal cysts) affecting both eyes. These conditions are distinct from typical retinoschisis (e.g., senile or juvenile X-linked) and are not specified as detached.

Apply this code when documentation clearly indicates the presence of retinoschisis or retinal cysts in both the right and left eyes, and the specific type is not otherwise classified. This code is appropriate when the physician's notes identify these conditions bilaterally without further specification of their etiology or precise anatomical location beyond the retina.

• Ensure documentation specifies bilateral involvement; otherwise, use the appropriate unilateral code (H33.11- for right, H33.12- for left).
• Distinguish from retinal detachment (H33.0-) or specific types of retinoschisis (e.g., H33.2- for senile retinoschisis).
• Always review the medical record for any underlying systemic conditions or associated ocular pathologies that may require additional coding.