Records the surgical removal of distant lymph nodes or other tissue(s)/organ(s) beyond the primary site at this facility. This field is to be used for ROADS codes after the ROADS to FORDS conversion. It is also to be used to code Surgery Other Regional/Distant Sites at the reporting facility for all tumors diagnosed before January 1, 2003.

The removal of non-primary tissue documents the extent of surgical treatment and is useful in evaluating the extent of metastatic involvement.

If central registries wish to study the treatment given at particular facilities, the facility-level treatment fields must be used. The summary treatment fields, conversely, combine information for all reporting facilities that provide first course of treatment for the tumor. Facility-specific fields allow studies of detailed referral patterns and treatment by type of healthcare setting. Knowing what part of the treatment was given at a particular facility also helps resolve consolidation issues.