American Joint Committee on Cancer (AJCC) Cervical Cancer Classification System version 9. Cervical Cancer Version 9 content is presented in a simple, easy-to-use format and is based on the classification system of the International Federation of Gynecology and Obstetrics (FIGO) 2018. and World Health Organization. (WHO) 2020 Consolidation of the histological classification of tumors. coded. Clinicians, registrars, researchers and other content users will benefit from new Cervix Uteri content, including tables, descriptions and images. Version 9 of the Cervical Cancer Classification System takes effect January 1, 2021 and replaces the cervical cancer site content in the 8th edition. All other disease areas in the 8th Cancer Classification Guide are still relevant in 2021.