9A01.3

ICD-11 MMS 2026-01

Infectious blepharitis

Description

A condition of the eyelid, commonly caused by an infection with a bacterial source. This condition is characterised by pruritus, burning, scratchiness, excessive tearing, or crusty debris around the eyelashes. This condition may also present with lid erythema, collarettes, madarosis, trichiasis, or plugged meibomian glands. Transmission is by direct or indirect contact with an infected individual, endogenous spread, or through fomites.

Index terms

  • Infectious blepharitis
  • anterior lid margin disease
  • anterior squamous lid disease
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  • blepharitis, nonulcerative
  • ciliary blepharitis
  • marginal blepharitis

Excludes

  • 9A60.4 – Blepharoconjunctivitis

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

Foundation children elsewhere

  • 1F00.11 – Herpes simplex infection of eyelid

Sibling codes

  • 9A01.0 – Preseptal cellulitis
  • 9A01.1 – Abscess of eyelid
  • 9A01.2 – Hordeolum
  • 9A01.4 – Infestation of eyelid
  • 9A01.Y – Other specified infectious disorders of eyelid
  • 9A01.Z – Unspecified infectious disorders of eyelid

Foundation entity

Infectious blepharitis – http://id.who.int/icd/entity/1475156994

Allowed postcoordination axes

Part of: 9A01: Infectious disorders of eyelid › 09: Diseases of the visual system