H33.1

H33.1: Retinoschisis and retinal cysts

Non-billable headerICD-10-CM

H33.1 is a non-billable header ICD-10-CM code for retinoschisis and retinal cysts. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

congenital retinoschisis (Q14.1)
microcystoid degeneration of retina (H35.42-)

Excludes1 inherited from the categories above H33.1

A category’s note binds every code beneath it.

Written on H33: Retinal detachments and breaks

detachment of retinal pigment epithelium (H35.72-, H35.73-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead H33.1

4 child codes. Green means billable.

H33.10Unspecified retinoschisis
H33.11Cyst of ora serrata
H33.12Parasitic cyst of retina
H33.19Other retinoschisis and retinal cysts

Other codes under H33

H33.0Retinal detachment with retinal break
H33.2Serous retinal detachment
H33.3Retinal breaks without detachment
H33.4Traction detachment of retina
H33.8Other retinal detachments