The National Health Insurance Fund or VLK (Lithuanian: Valstybinė ligonių kasa) is a key part of the healthcare system in Lithuania.
The fund finances primary care largely by capitation payments, with some fees for service and performance related pay.
In 2016, 225,510 people, about 8% of the population, had not paid their contributions to the National Health Insurance Fund, but it was thought many were actually not in the country.
In October 2018, the Financial Crime Investigation Service announced that it had detected a fraud against the fund where more than 1,200 Polish people were given fake employment contracts in Lithuania to get refunds of healthcare costs to which they were not entitled.
They did not in fact work in Lithuania, but claimed to be eligible for sickness and maternity benefits under European Union law.