Postop diagnosis: Foreign body cyst/ granuloma reaction post total knee arthroplasty.
Operation performed was I&D, removal of foreign body suture/cyst/granuloma.

Procedure summary: Left leg prepped and draped in usual sterile fashion. Time out performed. Draining sinus was located. It was the most distal portion just medial to the tibial tuberosity. Utilizing previous incision a 2cm elliptical incision was made and completely removed the small 2mm sinus. Upon removing it, the sinus tracked into a bulbous cystic region, possible early granuloma formation, what was completely elliptically removed and appeared to have some old monocryl suture within it. I further debrided the underlying tissue and irrigated copious amount of normal saline and bacitracin solution.

Dr. wants to code 27301 but I am not so sure.
Thank you!