You can claim any medical or accident costs that you have paid yourself and that are not covered by any insurance. Medical costs include, in particular, doctor's, dentist's, hospital and spa costs, which you have paid yourself, after deducting all benefits from public, professional or private insurance companies and institutions. In most cantons, and also at the Confederation level, self-paid costs must amount to at least five percent of net income in order to be deductible.