your friend's monthly insurance premium will depend upon age, gender, kanton and franchise for the compulsory insurance, the model (HMO, telmed, classic) and the company chosen. I don't think that they can exclude him for any chronic condition - and heamophilia is a genetic disorder, so no one can blame it on lifestyle (not that that matters). He'll probably need to choose a low franchise cost.

Where he might have trouble is with any of the supplimental plans. There they can exclude him for preexisting conditions.

Jenny is the best source and her advice is really, really good.