Definition of code:
a very short abbreviation, often with little correlation to the item it represents; a body of law, sanctioned by legislation, in which the rules of law to be specifically applied by the courts are set forth in systematic form; a compilation of laws by public authority; a digest
"you assigned the same "unique" code to two intake-categories, causing a database error!"
to write software programs; to categorise
by assigning identifiers from a schedule
, for example CPT coding for medical insurance purposes
"we should code the messages we sent out on usenet."