Yes, travel medical insurance is required when applying for a Poland visa because Poland is part of the Schengen Area. The insurance must cover at least €30,000 and should be valid for all Schengen countries. It must cover medical emergencies, hospital treatment, and repatriation if needed during your trip. The insurance should be valid for the entire duration of your stay. Applicants must submit proof of this insurance along with their visa application documents. Without valid travel insurance, the visa application may be refused by the embassy or consulate reviewing the application.