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04 - Diseases of the immune system

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

exclusions

• Complications of pregnancy, childbirth and the puerperium  (Chapter 18)
• Neoplasms  (Chapter 02)
• Developmental anomalies  (Chapter 20)

code elsewhere

• Symptoms, signs or clinical findings of blood, blood-forming organs, or the immune system  (MA10-MA3Y)

sections/codes in this chapter

• Organ specific autoimmune disorders
• Primary immunodeficiencies  (4A00-4A0Z)
• Acquired immunodeficiencies  (4A20)
• Nonorgan specific systemic autoimmune disorders  (4A40-4A4Z)
• Autoinflammatory disorders  (4A60-4A6Z)
• Allergic or hypersensitivity conditions  (4A80-4A8Z)
• Immune system disorders involving white cell lineages  (4B00-4B0Z)
• Certain disorders involving the immune system  (4B20-4B2Y)
• Diseases of thymus  (4B40)
• Other specified diseases of the immune system  (4B4Y)
• Diseases of the immune system, unspecified  (4B4Z)

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