When using tendon transfer codes, is the appropriate code where the tendon is harvested from or where it is transfered to? Specifically, our hand physicians do interpositional arthroplasties where a portion of the flexor carpi radialis tendon is harvested from the forearm and transfered to the base of the thumb metacarpal for stabilization of the MCP joint for arthritis. Should 25310, tendon transfer forearm, be used (area from where tendon is harvested) or 26480, tendon transfer MCP, (area to where tendon is transfered)? Thank you for your response.
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