The superior and inferior vena cava act as main tributaries for ...

[KWilfred]

The superior and inferior vena cava act as main tributaries for the other arteries and veins. What role do they play in transporting blood to and from the heart, and to what category of codes should procedures done on these vessels be coded?

Question 2

For the following questions, use an ICD-9-CM code book and select the appropriate code(s) for the diagnostic phrases given.
 
  Mitral stenosis and aortic stenosis

[zhanghao]

Answer to Question 1

The superior vena cava is the main vein through which blood flows from the upper portion of the body above the heart back to the heart. Blood flow from the lower portion of the body to the heart goes through the inferior vena cava. The procedures fall under category 36.

Answer to Question 2

396.0