[Medical expert assessment in social rights--responsibilities of the physician].

When an expert assessment for health reasons is carried out against a social welfare insurer, the medical expert has to know that he does not decide the outcome of the lawsuit. His task is to solely demonstrate and explain the medical facts. The lawyer decides whether this is followed by the claimed social contributions. It is not sufficient to just make a diagnosis. It has to be demonstrated what kind of consequences, i.e. whether a loss of functions or abilities occur and whether, therefore, impairments for the professional life can be derived. The area of conflict, where the expert witness moves between patient and medicine, legislation and client, becomes clear at the same time and is explained individually.