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Become a member and receive career-enhancing benefits

Our top priority is providing value to members. Your Member Services team is here to ensure you maximize your ACS member benefits, participate in College activities, and engage with your ACS colleagues. It's all here.

Become a Member
Become a member and receive career-enhancing benefits

Our top priority is providing value to members. Your Member Services team is here to ensure you maximize your ACS member benefits, participate in College activities, and engage with your ACS colleagues. It's all here.

Membership Benefits
ACS
cancer programs

American Joint Committee on Cancer

Validating science, improving patient care

American Joint Committee on Cancer

The Importance of Staging

Evidence-based anatomic staging is the critical factor to understanding cancer and treating patients. New breakthroughs in oncologic, radiologic, pathologic, and molecular science are opening up ever-more promising possibilities for precisely defining a prognosis and recommending a treatment based on a patient's individual data.

Cancer Staging System Updates

8th Edition Updates and Corrections

Important updates and errata identified in the AJCC Cancer Staging Manual, 8th Edition are divided into four levels of significance:

  1. Critical Changes. Change is critical for accurate staging. Includes changes to TNM categories, criteria, or prognostic stage groups.
  2. Histology/Topography. Corrections and additions made to histology or topography codes.
  3. Clarification. Clarification of concepts in text or definitions that does not affect staging.
  4. Omission. Error of omission that does not affect staging.

Updates and Errata Spreadsheet Updated 5/13/21.
Updated 8th Edition Breast Chapter Updated 3/13/18.
Topography and Histology 8th Edition Updated 9/1/23. This is a complete list from the 8th edition plus new histologies and terms approved after publication with their effective date.

Version 9 Updates

Topography and Histology Version 9 Updated 9/1/23. This is a complete list from Version 9 plus new histologies and terms approved after publication with their effective date.

If you have identified any issues not listed here, please email ajcc@facs.org.

Contact Cancer Programs

If you have questions about About Cancer Programs please contact The ACS Cancer Programs team.