The controlling of outpatient drug costs in Germany is implemented almost entirely on the federal state level. Each year the regional representatives of the Statutory Health Insurances (SHI) and the Association of SHI Physicians in all federal states have to define an upper limit for pharmaceutical expenditures. In the most northern federal state (Schleswig-Holstein) the regional parties agreed on a morbidity related approach solely based on prescription data to meet with the spending target. The underlying patient-related classification system is called Morbidity Related Groups (MRG). Introductory the underlying data, the present model for controlling measures and the hard-/software used today will be discussed. Subsequently improvements and extensions to the MRG classification system leading to a generalized model of drug resourcing are suggested.