4B2Y

ICD-11 MMS 2026-01

Other specified disorders involving the immune system

Exclusions from above levels

  • 2A83.0 – Monoclonal gammopathy of undetermined significance
  • NE84 – Failure or rejection of transplanted organs or tissues
  • 02 – Neoplasms
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  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 20 – Developmental anomalies

Sibling codes

  • 4B20 – Sarcoidosis
  • 4B21 – Polyclonal hypergammaglobulinaemia
  • 4B22 – Cryoglobulinaemia
  • 4B23 – Immune reconstitution inflammatory syndrome
  • 4B24 – Graft-versus-host disease

Foundation entity

Certain disorders involving the immune system – http://id.who.int/icd/entity/1860070272

Part of: 04: Diseases of the immune system