9D54

ICD-11 MMS 2026-01

Visual illusions

Description

Visual illusions refer to percepts based on an erroneous interpretation of visual input.

Index terms

  • Visual illusions
  • Micropsia
  • Macropsia
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  • megalopsia
  • Oscillopsia
  • Pulfrich stereo illusion
  • Halo vision
  • visual halo

Exclusions from above levels

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 8A21.0 – Posterior cortical atrophy

Sibling codes

  • 9D50 – Visual discomfort
  • 9D51 – Transient visual loss
  • 9D52 – Hemifield losses
  • 9D53 – Entoptic phenomena
  • 9D55 – Nonorganic visual loss
  • 9D56 – Visual release hallucinations
  • 9D5Y – Other specified subjective visual experiences
  • 9D5Z – Subjective visual experiences, unspecified

Foundation entity

Visual illusions – http://id.who.int/icd/entity/843626106

Part of: 09: Diseases of the visual system