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H33.1

Non-billable

Retinoschisis and retinal cysts

H33.1 is the ICD-10-CM code for Retinoschisis and retinal cysts. It is a non-billable category code — use a more specific child code such as H33.10 for billing.

Status
Header (non-billable)
Chapter
H00-H59
Parent
H33
Subcodes
4
Edition
FY2026

H00-H59 Diseases of the eye and adnexa

Excludes1 — not coded here

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

Frequently asked questions

What is ICD-10 code H33.1?
H33.1 is the ICD-10-CM code for "Retinoschisis and retinal cysts". It falls under H00-H59 Diseases of the eye and adnexa.
Is H33.1 a billable code?
No — H33.1 is a non-billable header code. Use a more specific child code (such as H33.10) for billing.
What are the subcodes of H33.1?
H33.1 has 4 more specific child codes, including H33.10, H33.11, H33.12.
What is excluded from H33.1?
Excludes1 (not coded here): congenital retinoschisis (Q14.1); microcystoid degeneration of retina (H35.42-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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