The obligation to keep records of the medical care received by a patie
nt is multifaceted and goes beyond the record-keeping obligation vis-a
-vis the patient arising out of the doctor-patient relationship that i
s usually in the forefront in juridical literature. In the area of med
ical equipment regulations and radiation protection, as also the regul
ations governing hazard materials, the obligation to keep records, ser
ves as a preventive measure in warding off danger; as a control, regul
atory and performance-determining instrument, it is indispensable for
negotiations on hospital accommodation and treatment at charges, calcu
lation of staff requirements, and in the area of the laws governing do
ctors working within the health insurance system, as well as, finally
for the purpose of quality control. The statement ''quod non est in ac
tis - non est in mundo'' also has its justification in the field of me
dical care.