1C20

ICD-11 MMS 2026-01

Chlamydial conjunctivitis

Description

Chlamydial conjunctivitis is often a sexually transmitted infection of conjunctiva caused by bacteria Chlamydia trachomatis serovars D-K. The symptoms include that one or both eyes will be red with a sticky discharge and swollen eyelids.

Index terms

  • Chlamydial conjunctivitis
  • Acute follicular conjunctivitis, chlamydial
  • Paratrachoma
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  • adult chlamydial keratoconjunctivitis
  • chronic conjunctivitis due to chlamydia trachomatis
  • inclusion blennorrhoea
  • inclusion conjunctivitis
  • inclusion conjunctivitis due to chlamydia trachomatis

Inclusions

  • Paratrachoma

Excludes

  • 1C23 – Trachoma
  • KA65.0 – Neonatal conjunctivitis due to Chlamydia

Exclusions from above levels

  • NE83.1 – Infection arising from device, implant or graft, not elsewhere classified

Sibling codes

  • 1C21 – Chlamydial peritonitis
  • 1C22 – Infections due to Chlamydia psittaci
  • 1C23 – Trachoma
  • 1C2Y – Other specified diseases due to chlamydiae
  • 1C2Z – Diseases due to chlamydiae, unspecified

Foundation entity

Chlamydial conjunctivitis – http://id.who.int/icd/entity/223956768

Allowed postcoordination axes

Part of: 01: Certain infectious or parasitic diseases