LB22.1

ICD-11 MMS 2026-01

Polysplenia

Description

A condition caused by the development of supernumerary spleens during the antenatal period. This condition may present with cardiac defects, anomalies in abdominal organs, or may be asymptomatic.

Index terms

  • Polysplenia
  • Accessory spleen
  • Splenunculi
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  • Supernumerary spleen

Exclusions from above levels

  • LA8Y – isomerism of atrial appendages (with asplenia or polysplenia)
  • http://id.who.int/icd/entity/733825440 – Inborn errors of metabolism

Sibling codes

  • LB22.0 – Congenital asplenia
  • LB22.2 – Ectopic spleen
  • LB22.Y – Other specified structural developmental anomalies of spleen
  • LB22.Z – Structural developmental anomalies of spleen, unspecified

Foundation entity

Polysplenia – http://id.who.int/icd/entity/765928537

Part of: LB22: Structural developmental anomalies of spleen › 20: Developmental anomalies