3A01

The ICD-11 code for megaloblastic anaemia due to vitamin b12 deficiency is 3A01. The full clinical description is "Megaloblastic anaemia due to vitamin B12 deficiency".

ICD-11 code 3A01 represents “Megaloblastic anaemia due to vitamin B12 deficiency”. It is classified under Chapter 3: Diseases of the Blood or Blood-Forming Organs.

3A01 is in Chapter 3: Diseases of the Blood or Blood-Forming Organs (codes 3A00-3C9Z).

There is no direct ICD-10 mapping available for 3A01 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.

3A01 has 8 child codes, including: 3A01.0 (Hereditary vitamin B12 deficiency anaemia), 3A01.1 (Neonatal vitamin B12 deficiency anaemia), 3A01.2 (Vitamin B12 deficiency anaemia due to low intake), 3A01.3 (Vitamin B12 deficiency anaemia due to intrinsic factor deficiency), and 4 more.