2A21

The ICD-11 code for mastocytosis is 2A21. The full clinical description is "Mastocytosis".

ICD-11 code 2A21 represents “Mastocytosis”. It is classified under Chapter 2: Neoplasms.

2A21 is in Chapter 2: Neoplasms (codes 2A00-2F9Z).

There is no direct ICD-10 mapping available for 2A21 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.

2A21 has 6 child codes, including: 2A21.0 (Systemic mastocytosis), 2A21.1 (Cutaneous mastocytosis), 2A21.2 (Mast cell sarcoma), 2A21.3 (Extracutaneous mastocytoma), and 2 more.