4A84.1

ICD-11 MMS 2026-01

Drug-induced anaphylaxis

Description

Anaphylaxis attributable to a drug. When severe it may be fatal. This systemic reaction usually develops within minutes to hours of administration of the drug, is often severe and may be fatal. The most frequent drugs causing anaphylaxis are antibiotics, particularly penicillins. Clinically there may be premonitory dizziness or faintness, skin tingling and erythema, followed by urticaria, angio-oedema, bronchospasm, abdominal pain and vasomotor collapse.

Index terms

  • Drug-induced anaphylaxis
  • Anaphylaxis due to drugs and medicaments
  • medicament-induced anaphylaxis

Exclusions from above levels

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

Sibling codes

  • 4A84.0 – Anaphylaxis due to allergic reaction to food
  • 4A84.2 – Anaphylaxis due to insect venom
  • 4A84.3 – Anaphylaxis provoked by physical factors
  • 4A84.4 – Anaphylaxis due to inhaled allergens
  • 4A84.5 – Anaphylaxis due to contact with allergens
  • 4A84.6 – Anaphylaxis secondary to mast cell disorder
  • 4A84.Y – Other specified anaphylaxis
  • 4A84.Z – Anaphylaxis, unspecified

Foundation entity

Drug-induced anaphylaxis – http://id.who.int/icd/entity/1200133657

Allowed postcoordination axes

Part of: 4A84: Anaphylaxis › 04: Diseases of the immune system