LOINC Feature Transformation

LOINC Concepts feature a number of logical properties - beyond their text descriptions and parts - that required some creative way to surface in a SNOMED CT format.

Two examples of these are the ORD/OBS flag (which indicates if a LOINC Term should be used in the context of an Order, and Observation, or Both), and a status of "Discouraged" which indicates that a LOINC Term is still active, but its use should be avoided.

Both of these flags exist as columns in the published LOINC distribution csv file and the method for exposing them in a SNOMED CT format is described in the following pages.