Modifier KX - documentation on file. Can someone please explain this modifier to me? Our Medicare carrier is telling us to put it on all of our DME's, but I don't completely understand the definition documentation on file or how it pertains the therapy caps, etc.
The Great Basin itself is a vast area of the western United States located primarily between the Rocky and Sierra Nevada mountain ranges, including areas of Utah, Nevada, California, Idaho, and Oregon.
The word basin refers to the portion of a valley from which water drains into the river, and then to the sea. The Amazon Basin is another way to refer to the Amazon River Vaâ¦lley in northern and central South America. The basin is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Peru, and Venezuela.