My read of the topic of this thread is the clarity of the description of charges in a portfolio, not the propriety of charges on an expense report. Different employers have different policies and the OP didn't seem to be starting a discussion of what a particular employer's policy is.
So... about the descriptions... I've always found them to be rather cryptic 5-character rate codes that don't really say much of anything unless you know how to look them up. The line items that I see say little more than "accommodation" and "Tax", so I guess I haven't seen this as even a potential problem, at least with IHG.