type Coding does not map display correctly

Type CODING mapping does not map the display to value and instead maps the code. 
display: Leg code L
Maps to openEHR
code: L value: L

See Diagnosestatus in KDS_Diagnose 
https://github.com/SevKohler/openFHIR/blob/start_testing/src/test/resources/kds_new/projects/org.highmed/KDS/diagnose/KDS_problem_diagnose.yml

I made a unidirectional Workaround for now. 