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.
Separation of powers is a political doctrine originating in the writings of Montesquieu in The Spirit of the Laws where he urged for a constitutional government with three separate branches of government.Each of the three branches would have defined abilities to check the powers of the other branches.his idea was called separation of powers. This philosophy heavily influenced the writing of the United States Constitution, according to which the Legislative, Executive, and Judicial branches of the United States government are kept distinct in order to prevent abuse of power.