Tax-excellent health insurance is essentially a universal insurance form of hospitalization insurance, and some chronic diseases (diabetes and hypertension) can also be reimbursed for part of outpatient expenses. Its biggest highlight is that the non-standard (sick) initial insurance company can't refuse, but the total amount of lifetime reimbursement will be significantly lower than that of the standard healthy body.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.