Intravascular [ultrasound] imaging of blood vessels. Note: real-time imaging of lumen of blood vessel(s) using sound waves. Code also any synchronous diagnostic or therapeutic procedures. Excludes: adjunct vascular system procedures, number of vessels treated (00.40-00.43) diagnostic procedures on blood vessels (38.21-38.29)
Video: Separation of Powers: Definition & Examples. Separation of powers is the distribution of political authority within a government. Learn more about how separation of power works in the United States, then check your understanding of this topic with a quiz.
Forty state constitutions specify that government be divided into three branches: legislative, executive and judicial. California illustrates this approach; The powers of state government are legislative, executive, and judicial. While separation of powers is key to the workings of American government, no democratic system exists with an absolute separation of powers or an absolute lack of separation of powers.