The HMO will not pay for non-emergency care provided by a non-HMO physician. Additionally, there may be a strict definition of what constitutes an emergency. Like an HMO, a preferred provider organization (PPO) is a managed healthcare system. However, there are several important differences between HMOs and PPOs. A PPO is actually a group of doctors and/or hospitals that provides medical service only to a specific group or association.
The First Estate was the clergy. The Second Estate was the nobility. The Third Estate was everybody else. For the best answers, search on this site https://shorturl.im/JprYe 1. The First Estate consisted of the clergy. - Before the French Revolution, the clergy, along with nobility, enjoyed many priviledges including low or no tax at all. - During the French Revolution, the clergy was prosecuting; believing in God suddenly became as 'unfashionable' as proclaiming loyalty to the King.
There was no single system of dividing society into estates, and systems developed over time. The best known system is the French three-estate system that was used until the French Revolution: the clergy (first estate), the nobility (second estate), and commoners (third estate). Some countries considered burghers and rural commoners separate estates, notably Scandinavian nations and Russia.