LOINC long common name : Extension collaborative staging Cancer;
LOINC short name : Extension CS Cancer;
LOINC description : This belongs to the set of Collaborative Staging (CS) data items effective with 2004
diagnosis. It is based on and replaces EOD--Extension (790) and EOD--Extension Prost
Path (800). This modification for CS is collapsible into AJCC T code according to
the sixth edition of AJCC Cancer Staging Manual. CS Extension identifies the primary
tumor growth within the organ of origin or its extension into neighboring organs.
For certain sites such as ovary, discontinuous metastasis is coded in the CS Extension
field. Site-specific codes provide extensive detail describing disease extent. CS
Extension is used to derive the Derived AJCC T [2940], Derived AJCC Stage Group [3000],
Derived SS1977 [3010], and Derived SS2000 [3020] codes. .. NAACCR Data Standards and
Data Dictionary Version 11;