CPT Knowledgebase - Dec 20, 2013

A patient who is 10 years post surgery for a total knee arthroplasty undergoes surgery due to chronic knee pain. At the time of the surgery, the surgeon discovers polyethylene wear. The tibial polyethylene is revised, but the existing tibial tray is retained. Is this procedure reported with code 27486, Revision of total knee arthroplasty, with or without allograft; 1 component, or should modifier 52, Reduced Services, be appended to code 27486 to indicate that the procedure was reduced because only the tibial polyethylene was revised?

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