Sorry for the delay. Decompression of nerve is 64722 (unspecified nerves) or 64726 (plantar digital nerve). 64722 (which sounds like the correct code for you without seeing the op report) has a MUE of 4. So you would bill on separate lines for Medicare with 59 or XS modifiers on line 2 and 3. The only covered icd10 for this code is G58.9.
But if the diagnosis is neuroma (a disorganized growth of nerve cells at the site of a nerve injury) then you would want to use one of the 6477x , 6478x, or 6479x codes. Again, without seeing the full op report and patient history, these are just my opinions based on the information provided.