sensory testing code

If a family practice doctor wants to do a monofilament test on a patients feet at the same time as their regular visit for diabetes and other things. Is there a code they can "add on" I found 0110T sensory test using other stimuli however I don't know if that is a ok code to use or if there is something else. Or just covered under the E&M code?

sorry

the monofilament test (which takes 5 seconds and costs nothing in supplies once you get a free monofilament from Novartis or Novo Nordisk) is bundled as part of E&M but there are codes for formal foot exams in diabetics with loss of protective sensation that include this- G0245