While some payers differ in their use of modifiers, taking the time to learn the rules will pay off. In the last five years, payers have increased their recognition of modifiers when processing claims, which makes it even more important to learn them and use them correctly. Modifier 25. Anytime you provide more than one service at a single encounter, you must consider whether a modifier is needed.
The Visa Waiver Program (VWP) allows citizens of certain countries to travel to the United States without a US Visa if they are visiting for 90 days or less as nonimmigrant visitors for business or pleasure (tourism). The Visa Waiver Program was established in 1986, and it became permanent in October, 2000.
There are currently 38 countries in the Visa Waiver Programme, including Switzerland. Nationals from these countries may enter the USA without a visa and remain there for up to 90 days. Exceptions: The Visa Waiver Programme does not apply to travellers who were in Iraq, Iran, Syria or Sudan on or after 1 March 2011.