A list of all changes between ICD-O-2 and ICD-O-3 (PDF) is available for downloading from the SEER web site.
Note: The "ICD-O-3 Changes - Differences Between ICD-O-2 and ICD-O-3" download is copyrighted by the World Health Organization (WHO). Anyone who incorporates these codes and terms into a software program is obligated to respect the copyright laws protecting them. If you receive a password and download the provided file, you may be contacted by WHO for licensing/copyright fees. Receiving a password implies that you intend to respect the copyright laws protecting this information and that you will not share the password or downloaded file with any other party.