Prior to my arrival at my current FI the OCC forced, yes, forced my FI to code all those types of businesses that NewToo mentioned as High Risk. I cannot count the number of hours’ wasted and false positives I had to deal with because of this "recommendation."
As Ken posted earlier, you're not required to code any one high risk from day one. Type of business is just one factor, which when examined with others, expected/actual activity, types of products/services needed by the customer, foreign vs. domestic activity, etc. which can lead to a high risk rating. This is all part of using a risk based approach. That is what the manual recommends.
"100 victories in 100 battles isnt the most skillful. Subduing the other's military w/o battle is the most skillful." Sun-Tzu