3A81

The ICD-11 code for acquired polycythaemia is 3A81. The full clinical description is "Acquired polycythaemia".

ICD-11 code 3A81 represents “Acquired polycythaemia”. It is classified under Chapter 3: Diseases of the Blood or Blood-Forming Organs.

3A81 is in Chapter 3: Diseases of the Blood or Blood-Forming Organs (codes 3A00-3C9Z).

There is no direct ICD-10 mapping available for 3A81 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.

3A81 has 5 child codes, including: 3A81.0 (Polycythaemia due to hypoxia, including high altitude), 3A81.1 (Polycythaemia due to over-transfusion or blood doping), 3A81.2 (Relative polycythaemia), 3A81.Y (Other specified acquired polycythaemia), and 1 more.