42079-4

LOINC code 42079-4 identifies "Tumor size.collaborative staging". This item belongs to the set of Collaborative Staging (CS) data items effective with 2004 diagnosis. It is based on and replaces EOD--Tumor size [780]. For most sites, CS Tumor Size is used to record the largest dimension, or the diameter of the primary tumor in millimeters (for example: 1 mm = 001, 1 cm = 010). See the CS schemes for site-specific variants. For many sites, the CS algorithm uses this data item to derive the Derived AJCC T [2940] according to the sixth edition of AJCC Cancer Staging Manual. CS is a group of data items set up by a joint task force including representatives from SEER, ACoS, CDC, NAACCR, NCRA, and AJCC, designed to provide a single uniform set of codes and rules for coding EOD/ stage information to meet the needs of all of the participating standard setters. CS incorporates all of the fields from SEER 10-digit EOD, in a modified form, and adds several additional fields. When CS data items are coded, a computer algorithm allows generation of AJCC Sixth Edition TNM stage, SEER Summary Stage 1977, and SEER Summary Stage 2000. Separate CS fields are provided in the NAACCR record for these outputs. .. NAACCR Data Standards and Data Dictionary Version 11

This code measures Tumor size.collaborative staging in Tumor. It belongs to the TUMRRGT class in the LOINC classification.

LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.