ICD-10-CM diagnosis code
H33.191 Other retinoschisis and retinal cysts, right eye
- Billable
- Yes, a complete code (FY2026)
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Other codes in H33
65 complete codes in this category.
- H33.113Cyst of ora serrata, bilateral
- H33.119Cyst of ora serrata, unspecified eye
- H33.121Parasitic cyst of retina, right eye
- H33.122Parasitic cyst of retina, left eye
- H33.123Parasitic cyst of retina, bilateral
- H33.129Parasitic cyst of retina, unspecified eye
- H33.191Other retinoschisis and retinal cysts, right eye
- H33.192Other retinoschisis and retinal cysts, left eye
- H33.193Other retinoschisis and retinal cysts, bilateral
- H33.199Other retinoschisis and retinal cysts, unspecified eye
- H33.20Serous retinal detachment, unspecified eye
- H33.21Serous retinal detachment, right eye
Documentation tips
- Make sure the note supports every element of the title, “Other retinoschisis and retinal cysts, right eye”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to H33.
The international WHO ICD-10 also has H33, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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