Organizational Unit: Specialty Keys 
Use
You can classify organizational units (OUs) in relation to specialty. This assignment is the basis for displaying the figures of government-mandated statistics by specialty. Consequently, you should assign departments and clinics to a specialty.
If you cannot assign a clinic to exactly one specialty, do not make any assignment. In this case, the system displays the figures calculated for the clinic under No Specialty Assigned in the statistics.
Prerequisites
In Customizing for IS-H, you specify according to which statutory regulations you assign OUs to specialties. For more information about this, see the sections entitled Define Specialty Categories, Code Specialties and Maintain Specialty Hierarchy in the IS-H Implementation Guide.
The following possibilities exist:
Additionally, you can classify OUs according to specialties of your choosing.
Activities
You assign specialties to OUs on the Specialty, indic. tab page.