NAACCR Item #776: EOD Mets

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
776 2 SEER 2018 16

NAACCR XML: Tumor.eodMets

Alternate Names
   SEER Mets

EOD Mets is part of the EOD 2018 data collection system and is used to classify the distant site(s) of metastatic involvement at time of diagnosis. See also EOD Primary Tumor [772] and EOD Regional Nodes [774]. Effective for cases diagnosed 1/1/2018+.


EOD Mets is used to calculate Derived EOD 2018 M [795] (when applicable) and Derived Summary Stage 2018 [762]. Derivation will occur at the level of the central registry.

Note: This data item was included in Standards Volume II, Version 16; however, it was not implemented until 2018.

Codes (in addition to valid schema-specific codes)

00None No distant metastasis Unknown if distant metastasis
88Not applicable: Information not collected for this schema Use for these sites only: HemeRetic; Ill Defined Other (includes unknown primary site); Kaposi Sarcoma; Lymphoma; Lymphoma-CLL/SLL; Myeloma Plasma Cell Disorder
99Death certificate only (DCO)

Note: See the most current version of EOD ( for rules and site-specific codes and coding structures.