ICD-10-CM 2027
ICD-10 code for retinoschisis
From the official ICD-10-CM alphabetic index entry “Retinoschisis”. Page updated September 29, 2026.
About coding retinoschisis
The ICD-10-CM code for retinoschisis is H33.10 (Unspecified retinoschisis). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H33.10.
Within H33.1, choose H33.10 (Unspecified retinoschisis) only when documentation doesn't support a more specific option: cyst of ora serrata (H33.11), parasitic cyst of retina (H33.12) and other retinoschisis and retinal cysts (H33.19).
To report this condition, pick the subcode that matches the documentation: H33.101 (right eye), H33.102 (left eye), H33.103 (bilateral) and H33.109 (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.
More specific retinoschisis codes (official index)
Common questions about retinoschisis ICD-10 codes
What is the ICD-10 code for retinoschisis?
- H33.10 — Unspecified retinoschisis (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: Q14.1, H33.19.
What is the ICD-10 code for congenital retinoschisis?
- Q14.1 — Congenital malformation of retina.
Is H33.10 billable?
- No. H33.10 is a header code. Report one of its more specific subcodes instead.