9A90.1

ICD-11 MMS 2026-01

Degeneration of iris

Description

This refers to the change of tissue to a lower or less functionally active form, of the thin, circular structure in the eye, responsible for controlling the diameter and size of the pupil and thus the amount of light reaching the retina. The color of the iris is often referred to as "eye color."

Index terms

  • Degeneration of iris
  • Pigmentary degeneration of iris
  • Acute bilateral depigmentation of iris
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  • Translucency of iris

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

  • 9A90.0 – Disorders of chamber angle
  • 9A90.2 – Iris atrophy
  • 9A90.Y – Other specified degeneration of iris or ciliary body
  • 9A90.Z – Degeneration of iris or ciliary body, unspecified

Foundation entity

Degeneration of iris – http://id.who.int/icd/entity/2032256272

Allowed postcoordination axes

Part of: 9A90: Degeneration of iris or ciliary body › 09: Diseases of the visual system