LEXSO is a classification code from one of several
sources (i.e., ICD, CPT, DSM). A complete list of these sources can be found
in the Lexicon Utility's Technical Manual.
LEXS(SAB,#)=IEN^TERM is a local array containing
references to expressions linked to the classification code. SAB refers to
the three-character source abbreviation of the classification system (i.e.,
ICD-9-CM = ICD). A description of this array and a list of the source
abbreviations can be found in the Lexicon Utility's Technical Manual.
This is a date in Fileman format used to check if a
code is active or inactive on a specified date. If not supplied, it will
default to TODAY.