9A04.0

ICD-11 MMS 2026-01

Trichiasis without entropion

Description

This refers to abnormally positioned eyelashes that grow back toward the eye, touching the cornea or conjunctiva. This can be caused by infection, inflammation, autoimmune conditions, congenital defects, eyelid agenesis and trauma such as burns or eyelid injury. This diagnosis is without a condition in which the eyelid (usually the lower lid) folds inward. It is very uncomfortable, as the eyelashes constantly rub against the cornea and irritate it.

Index terms

  • Trichiasis without entropion
  • Trichiasis without entropion upper eyelid
  • Trichiasis without entropion lower eyelid

Exclusions from above levels

  • LA14.0 – Structural developmental anomalies of eyelids
  • LA14.0Y – Distichiasis
  • 01 – Certain infectious or parasitic diseases
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  • 05 – Endocrine, nutritional or metabolic diseases
  • 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

  • 9A04.1 – Madarosis of eyelid or periocular area
  • 9A04.Y – Other specified acquired disorders of eyelashes
  • 9A04.Z – Acquired disorders of eyelashes, unspecified

Foundation entity

Trichiasis without entropion – http://id.who.int/icd/entity/945071067

Allowed postcoordination axes

Part of: 9A04: Acquired disorders of eyelashes › 09: Diseases of the visual system