LOINC description : Records prognostic indicators for specific sites or histologies. COC uses these codes
for cases diagnosed 1996 and forward. See the COC ROADS Manual, 1998 Supplement, for
a list of specific sites and histologies. For tumors diagnosed before January 1, 1996,
Tumor Marker 1 is coded only for estrogen receptor status of breast cancers. For SEER
requirements for the specific sites, histologies, and diagnosis years for which this
item is coded, see the 1998 SEER Program Code Manual... NAACCR Data Standards and
Data Dictionary Version 11;