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.
Two important aspects of the U.S. Constitutionâfederalism and the separation of powersârepresent, in part, the framersâ efforts to divide governmental power. Federalism limits government by creating two sovereign powersâthe national government and state governmentsâthereby restraining the influence of both. Separation of powers imposes internal limits by dividing government against itself, giving different branches separate functions and forcing them to share power.