MC20.2

ICD-11 MMS 2026-01

Hypopyon

Description

Hypopyon is inflammatory cells in the anterior chamber of eye. It is a leukocytic exudate, seen in the anterior chamber, usually accompanied by redness of the conjunctiva and the underlying episclera. It is a sign of inflammation of the anterior uvea and iris, i.e. iritis, which is a form of anterior uveitis. The exudate settles at the bottom due to gravity.

Index terms

  • Hypopyon
  • hypopyon iridocyclitis
  • pus in anterior chamber

Exclusions from above levels

  • 19 – Certain conditions originating in the perinatal period
  • JA66 – Clinical findings on antenatal screening of mother

Sibling codes

  • MC20.0 – Staphyloma
  • MC20.1 – Small drusen of the macula
  • MC20.Y – Other specified clinical findings of the visual system

Foundation entity

Hypopyon – http://id.who.int/icd/entity/803985395

Part of: MC20: Clinical findings of the visual system › 21: Symptoms, signs or clinical findings, not elsewhere classified