cpt for patellofemoral resurfacing

Procedure patellofemoral resurfacing using femoral component and patellar button

Dr performed patella osteotomy protected with a 35 mm plate and subluxed into the gutter. Sulcus had a 3 degree cut and "tongue" femoral component and patella component was drilled in place.

I have used unlisted in the past similar to total 27447. If unlisted is not acceptable would 27442 and 27438-59 be the correct coding since the dr did not address the patella alone? Any insight would be appreciated!

Thanks

cpt for patellofemoral resurfacing