preventive evaluation

“I recently saw a new patient with Oxford insurance for a tinea problem. A prescription was given and options for additional treatments were discussed. We billed his insurance for an initial office visit. The visit was allowed by insurance and the payment was applied to his deductible. He was billed by us. He checked with Oxford and is now telling us that “preventive” care is not subject to the deductible and would like me to resubmit to Oxford telling them that the visit was for “preventive” care. My opinion is that “preventive” care does not really apply to a specialist and that I could not undo what I already submitted. Can we bill for “preventive” care and, if so, is it possible to resubmit the claim?”