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Here's a quick question. Patient with liver cancer and ascites undergoes parcentesis with placement of an indwelling, non-tunneled catheter. The next day the patient returns with leakage around the catheter site. The abdominal catheter is removed and a new catheter placed under fluoroscopic guidance. I believe 49021 would be used for the first admission but what should be assigned for the catheter exchange on the second day? Can 49423 be assigned even thought this is not an abscess or cyst drainage catheter? Thanks again.