For outbound transaction maps, you can display the code lists for an element form the Mapping window, but there are no actions available.
Displaying the code list for an element
Right-click an element and choose Full Code List or Implementation Code List from the drop-down list.
The Full Code List or the Implementation Code List displays.
The Implementation Code List is available only when
you are using an implementation guide standard. Implementation guide
standards can be obtained by using the SEF import facility or by
purchasing an electronic implementation guide.