This paper attempts to address the general questionwhether information technologies, as applied in thearea of medicine and health care, have or are likelyto change fundamental concepts regarding disease andhealth. After a short excursion into the domain ofmedical informatics I provide a brief overview of someof the current theories of what a disease is from amore philosophical perspective, i.e. the ``valuefree'' and ``value laden'' view of disease. Next, Iconsider at some length, whether health careinformatics is currently modifying fundamentalconcepts of disease. To (...) this question I will answerlargely in the negative, and I will provide the sketchof some arguments from current research programs inmedical informatics why I think this is the case. Thisargumentation is supported by a detailed account ofhow the disease profile for beriberi heart disease,used in one of the major medical informaticsdiagnostic programs, QMR (and its ancestorINTERNIST-1), was developed, and why at least thisprogram essentially follows received views oftraditional medicine.The one main exception to theconformity of this program to ``received'' views of adisease occurs when the program's designers need tofine-tune a disease definition. This fine-tuning is tocomport with the expert's perspective on the disease,including his or her epistemic values, as well as theprogram's other resources for diagnosing components ofa disease. (shrink)