4A00

The ICD-11 code for primary immunodeficiencies due to disorders of innate immunity is 4A00. The full clinical description is "Primary immunodeficiencies due to disorders of innate immunity".

ICD-11 code 4A00 represents “Primary immunodeficiencies due to disorders of innate immunity”. It is classified under Chapter 4: Diseases of the Immune System.

4A00 is in Chapter 4: Diseases of the Immune System (codes 4A00-4B4Z).

There is no direct ICD-10 mapping available for 4A00 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-10. Use the ICD-11 to ICD-10 converter to search for related codes.

ICD-11 is the latest revision of the WHO's International Classification of Diseases, succeeding ICD-10. Key differences include: a fully digital-first design, new chapters for sleep-wake disorders, sexual health, and traditional medicine, improved coding for rare diseases, and better integration with electronic health records through extension codes.

4A00 has 6 child codes, including: 4A00.0 (Functional neutrophil defects), 4A00.1 (Defects in the complement system), 4A00.2 (Genetic susceptibility to particular pathogens), 4A00.3 (Immunodeficiency with natural-killer cell deficiency), and 2 more.