FB81

The ICD-11 code for osteonecrosis is FB81. The full clinical description is "Osteonecrosis".

ICD-11 code FB81 represents “Osteonecrosis”. It is classified under Chapter 15: Diseases of the Musculoskeletal System or Connective Tissue.

FB81 is in Chapter 15: Diseases of the Musculoskeletal System or Connective Tissue (codes FA00-FC0Z).

There is no direct ICD-10 mapping available for FB81 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.

FB81 has 9 child codes, including: FB81.0 (Idiopathic aseptic osteonecrosis), FB81.1 (Osteonecrosis due to dialysis), FB81.2 (Drug-induced osteonecrosis), FB81.3 (Osteonecrosis due to trauma), and 5 more.