in this sense retrospective reimbursement could support broader portability of services in mexico by facilitating compensatory payments between purchasers when users are treated outside the geographical area covered by their insurer as currently the case in countries like sweden significant savings have already been realised through consolidated purchasing of pharmaceuticals the comision coordinadora para la negociacion de precios de medicamentos y otros insumos para la salud ccnpmis the coordinating commission for the negotiation of prices of pharmaceuticals and other health inputs has helped standardise the prices paid for patented or singlesource drugs by sp and the ss institutes