https://www.ivisa.com/portugal-health-declaration-form

Portugal introduced a medical aid fund, that's the main source of its public health system. The most important purpose of the health declaration is to make certain that all have access to adequate healthcare without discrimination as a result of economic backgrounds or other socioeconomic statuses. Unlike in most European Union nations, the health declarations don't specify any pre-determined set of criteria, as each case is evaluated on its own merits.