Here is the lay description from Encoder Pro - it's a little different from what you have (I think)
The physician performs ligation of internal hemorrhoids. The physician explores the anal canal and identifies the hemorrhoid columns. A single suture ligation of the hemorrhoid columns is performed in 46945. Multiple suture ligations of the hemorrhoid columns are performed in 46946.
A "column" is just what it sounds like ... an anatomic part or structure in the form of a pillar. A "hemorrhoid" is a varicose condition of a rectal vein. So when the rectal vein is swollen in its "varicose condition" it appears to be like a pillar or column.
Hope that helps.
F Tessa Bartels, CPC, CEMC
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