LOINC description : Code for the best method of diagnostic confirmation of the cancer being reported at
any time in the patient's history Diagnostic confirmation is useful to calculate rates
based on microscopically confirmed cancers. Full incidence calculations must also
include tumors that are only confirmed clinically. The percentage of tumors that are
clinically diagnosed only is an indication of whether case finding is including sources
outside of pathology reports... NAACCR Data Standards and Data Dictionary Version
11;