H33.19Other retinoschisis and retinal cysts

H33.19 is the ICD-10-CM diagnosis code for other retinoschisis and retinal cysts. It belongs to category H33 (retinal detachments and breaks), block H30-H36 (disorders of choroid and retina) and chapter 7 (diseases of the eye and adnexa). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within H33.1, choose H33.19 (Other retinoschisis and retinal cysts) only when documentation doesn't support a more specific option: unspecified retinoschisis (H33.10), cyst of ora serrata (H33.11) and parasitic cyst of retina (H33.12).

To report this condition, pick the subcode that matches the documentation: H33.191 (right eye), H33.192 (left eye), H33.193 (bilateral) and H33.199 (unspecified eye).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.