D10A Segments ELU

ELU
TO SPECIFY THE USAGE OF A DATA ELEMENT.
To identify the tag of a data element.
Code specifying the requirement designator.
To identify a position in a sequence.
Code specifying a maintenance operation.
To specify the maximum number of occurrences.
Code specifying the source of a code value.
Code specifying the validation criteria to be applied.
Code specifying the usage type of a data element.