In this paper one aspect of social relation in health and social service is investigated by means of documentation analysis: the quality of medical information on admission to a nursing home. In 6% of all cases (n = 120) the nursing home received detailed data on the diagnosis and therapy, the status praesens and on the clinical symptoms, on the social and psychological situation of the aged person in need of care and his/her clinical parameters. With 6% the basic data (name, date of birth, diagnosis) were incomplete. With 66.7% the data were available on the day of admission. There was no dependence on age, sex and stage of care of the person in need of care. The data were less extensive if the person in need of care was referred to from an out-patient department and inquiries could not be made with him/her or his/her relatives/acquaintances. An improvement of this situation is possible if the cooperation between hitherto attending doctor, the care institution of the municipal district for aged people and the nursing home is coordinated better.