The codes can be billed together, but not for the same wound. With that said, which one to bill depends on the documentation. Either it's a callus or a wound, not both.
Here are some partial quotes from Dr Poggio and Bass from Codingline, great resource.
"I think we need to be careful with the terms we use. Essentially, every callous is in theory pre-ulcerative if left untreated. By the same logic is every curved nail pre-paronychial?
CPT 97597 states debridement of OPEN wound (eg fibrin, devitalized epidermis/dermis, exudate, debris, biofilm). Can you document these and similar findings in your chart? If not, then I would recommend using the callous debridement code CPT11055." "The safest answer to this question is the following: bill for what you did. I think if the ulcer is closed, as is stated in the question, then +97597, which requires an open wound, would not apply here. If truly a pre-ulcerative callus, then billing for 11055 is appropriate."