International Classification of Diseases, 4th Edition (ICD-O-4)
Following the request of cancer registries, the consultation period for ICD-O-4 has been extended until 30 April 2025.
Comments received during the first consultation round have already been addressed and included in the beta version and associated listing of changes.
The beta version and tables are here: tumourclassification.iarc.who.int/icdo4/
- Please use the page's feedback function (contact form) to send in questions or comments.
