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ICD-10 diagnosis code

H33.1 Retinoschisis and retinal cysts

This page in Swedish

H33.1 is the ICD-10 code for Retinoschisis and retinal cysts. It is a four-character subcategory of H33 (Retinal detachments and breaks), the most specific level in the WHO edition. It belongs to the block H30–H36 (Disorders of choroid and retina) in Chapter VII, Diseases of the eye and adnexa.

Code type
Subcategory (4 characters)
Chapter
VII · H00–H59
Classification
WHO ICD-10, 2019 version

What H33.1 includes

Conditions and terms that are coded here.

  • Cyst of ora serrata
  • Parasitic cyst of retina NOS
  • Pseudocyst of retina

What H33.1 excludes

Conditions that look similar but belong under another code.

  • congenital retinoschisis Q14.1
  • microcystoid degeneration of retina H35.4

H33.1 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

H33.1Retinoschis och retinala cystor

NorwayICD-10-NO

H33.1Retinoskise eller cyste i netthinne

DenmarkICD-10-DK

DH331Retinoskise eller cyste i retina

  • DH331ACystis retinae
  • DH331BCystis orae serratae
  • DH331CCystis retina e parasitica UNS
  • DH331DPseudocystis retinae
  • DH331ERetinoschisis
FinlandICD-10-FI

H33.1Verkkokalvohalkio ja verkkokalvokystat

GermanyICD-10-GM

H33.1Retinoschisis und Zysten der Netzhaut

FranceICD-10-FR

H33.1Rétinoschisis et kystes rétiniens

NetherlandsICD-10-NL

H33.1retinoschisis en retinacysten

United StatesICD-10-CM

Listed through more specific codes:

  • H33.101Unspecified retinoschisis, right eye
  • H33.102Unspecified retinoschisis, left eye
  • H33.103Unspecified retinoschisis, bilateral
  • H33.109Unspecified retinoschisis, unspecified eye
  • H33.111Cyst of ora serrata, right eye
  • H33.112Cyst of ora serrata, left eye
  • H33.113Cyst of ora serrata, bilateral
  • H33.119Cyst of ora serrata, unspecified eye
  • and 8 more national subcodes

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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