NOTE: This EOD coding scheme is required by KCR for cases diagnosed from January 1, 2000 through December 31, 2003. As of January 1, 2004, data in fields 30490-30530 - Tumor Size, SEER Extent, Pathologic Extent for Prostate, and SEER Lymph Node Involvement - will no longer be collected. Instead, this information will be captured in the Collaborative Stage fields 30540-30680.

The extent of disease scheme used for cases diagnosed after 1988 by SEER is composed of:

Size of Primary Tumor (3 digits)

Extension (2 digits) plus 2 additional digits for prostate pathologic extent

Lymph Nodes (1 digit)

Number of Positive Regional Lymph Nodes (2 digits)

Number of Regional Lymph Nodes Examined (2 digits)

The codes and coding instructions for the SEER Extent of Disease--1988 are detailed in SEER Extent of Disease Codes-- 1988, Codes and Coding Instructions, third edition (revised in 1998). This reference contains the site specific codes for items 30490, 30510, 30520, and 30530:  tumor size, SEER extension, prostate pathologic extent, and lymph node involvement.

Extent of Disease should include all information available within four months of diagnosis in the absence of disease progression or through completion of surgery(ies) in first course treatment, whichever is longer. Except for tumor size, Extent of Disease information obtained after treatment with neoadjuvant chemotherapy, radiation therapy, hormonal therapy, or immunotherapy may be included.

All schemes apply to all histologies, unless otherwise noted.

The priority for using information is pathologic, operative and clinical findings.

For "Death Certificate Only" cases, this field is to be coded '999999999' except for death certificate only prostate cases, which are coded '999909999990'.