Health insurance for citizens of EU member states
Since mid 2004 citizens from the individual EU member states, who travel temporarily to another EU member state and hold a European Health Insurance Card (EHIC), are automatically insured. All healthcare providers in the EU, the EEA and Switzerland must accept patients from the EU in possession of an EHIC.

Health insurance for citizens of countries not in the EU
Citizens of countries outside of the EU should take out health insurance before leaving home. If they fail to do so, they are liable to pay for treatment at the point of delivery.

Extra insurance cover
Individuals from EU member countries can also take out extra health insurance cover (covering repatriation). The Czech State Health Insurance Company provides a commercial insurance product for those staying in the country for longer periods as tourists (www.vzp.cz).

Source: www.visitczechia.com