ICD-10-CM 2027
ICD-10 code for retina cyst
From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › retina”. Page updated September 29, 2026.
About coding retina cyst
The ICD-10-CM code for retina cyst is H33.19 (Other retinoschisis and retinal cysts). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on H33.19.
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.
More specific retina cyst codes (official index)
Common questions about retina cyst ICD-10 codes
What is the ICD-10 code for retina cyst?
- H33.19 — Other retinoschisis and retinal cysts (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: H33.11, H33.12.
What is the ICD-10 code for ora serrata retina cyst?
- H33.11 — Cyst of ora serrata (header code; choose a more specific subcode).
What is the ICD-10 code for parasitic retina cyst?
- H33.12 — Parasitic cyst of retina (header code; choose a more specific subcode).
Is H33.19 billable?
- No. H33.19 is a header code. Report one of its more specific subcodes instead.