denotes is specified output of member of data mapping concept code A symbol (a string of characters) that is assigned to a concept within a standardized terminology or classification system (e.g., a SNOMED CT or LOINC code) in order to identify and denote that concept. Concept Distinct from 'centrally registered identifier' (IAO:0000578): a code identifies/denotes a concept (a universal) in a terminology, not a particular registered in a central registry. code symbol information content entity code set