9A61.1

ICD-11 MMS 2026-01

Pterygium

Index terms

  • Pterygium
  • pterygium of eye
  • web eye
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  • Amyloid pterygium
  • Central pterygium of eye
  • Double pterygium of eye
  • Peripheral pterygium of eye, stationary
  • Peripheral pterygium of eye, progressive
  • Recurrent pterygium of eye

Excludes

  • 9A61.2 – Pseudopterygium of conjunctiva

Exclusions from above levels

  • 9A7Y – keratoconjunctivitis
  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 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

  • 9A61.0 – Pingueculae
  • 9A61.2 – Pseudopterygium of conjunctiva
  • 9A61.3 – Conjunctival scars
  • 9A61.4 – Conjunctival vascular disorders
  • 9A61.5 – Conjunctival or subconjunctival haemorrhage
  • 9A61.6 – Conjunctival or subconjunctival degenerations or deposits
  • 9A61.Z – Certain specified disorders of conjunctiva, unspecified

Foundation entity

Pterygium – http://id.who.int/icd/entity/1207385905

Allowed postcoordination axes

Part of: 9A61: Certain specified disorders of conjunctiva › 09: Diseases of the visual system