4B4Z

ICD-11 MMS 2026-01

Diseases of the immune system, unspecified

Exclusions from above levels

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

Sibling codes

  • 4A20 – Acquired immunodeficiencies
  • 4B40 – Diseases of thymus
  • 4B4Y – Other specified diseases of the immune system

Foundation entity

Diseases of the immune system – http://id.who.int/icd/entity/1954798891

Part of: 04: Diseases of the immune system