Okay, now I am not in the US, so the rules may be slightly different there, but I am a judge and am familiar with the rules in Canada, as well as internationally.
Here, tattoos are not a deduction.
Which is good, because I have 4, all of which are visible in my comp leo, one that goes across my upper back and one that covers the back of my calf.
There might be a difference because it is drawn? But I would think it would be the same.
Not much is actually against the code. In Canada it is just no contrasting tape, no jewellery, no underwear showing, and the rules about leo and mens shorts coverage (and longs colour)
And if it is a deduction, it is only 0.2 per routine (according to the fig rules) so I wouldn't worry much about it. Canada has a rule that it is 0.2/occurrence, but that should just be a Canadian thing.