This resource provides lists compiled by SEER and recommended for use by the Commission on Cancer (CoC).
International Classification of Diseases for Oncology - Third Edition (ICD-O-3)
This publication provides basic site and histology codes and coding rules.
Multiple Primary and Histology Coding Rules
Refer to these rules for coding cases with multiple tumors or multiple histologies involved.
Refer to these rules for coding site and histology for hematopoietic and lymphoid cancers.
American Joint Committee on Cancer Staging Manual, Eighth Edition
The AJCC 8th Edition Cancer Staging Manual is used to assign stage for cancer diagnosed January 1, 2018 and later. Please visit CancerStaging.org for education, reference resources, and the most up to date information.
Collaborative Stage Data Collection System
This resource provides the current and past manuals, and supplementary information.
SEER*Rx Interactive Drug Database
Use this resource to distinguish among chemotherapy, hormone therapy, and other systemic agents.