4B06

ICD-11 MMS 2026-01

Acquired lymphopenia

Index terms

  • Acquired lymphopenia
  • Lymphopenia associated with aplastic anaemia
  • Lymphopenia associated with infection
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  • Iatrogenic lymphopenia
  • Lymphopenia associated with systemic disease
  • Nutritional or dietary lymphopenia

Exclusions from above levels

  • 02 – Neoplasms
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 20 – Developmental anomalies

Sibling codes

  • 4B00 – Disorders of neutrophil number
  • 4B01 – Disorders of neutrophil function
  • 4B02 – Eosinopenia
  • 4B03 – Eosinophilia
  • 4B04 – Disorders with decreased monocyte counts
  • 4B05 – Disorders with increased monocyte counts
  • 4B07 – Acquired lymphocytosis
  • 4B0Y – Other specified immune system disorders involving white cell lineages
  • 4B0Z – Immune system disorders involving white cell lineages, unspecified

Foundation entity

Acquired lymphopenia – http://id.who.int/icd/entity/1654306762

Part of: 04: Diseases of the immune system