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I need your help coding this procedure. "Serial CT images of the left upper neck and chest demonstrate a large soft tissue mass corresponding to area of suspected metastasis noted on outside MRI imaging. This area was targeted for ablation. The overlying skin was prepped and draped in normal sterile fashion. After local anesthetic was given intended needle tract, 4 x Ice Rod Plus probes were advanced with serial CT guidance. Confirmation was performed utilizing CT scan in multiple planes. After confirmation of appropriate positioning, ablation was commenced. Ablation commenced with two cycles of 10-minute freeze and 6-minute active thaw. At the conclusion of this, the Ice Rod Plus probes were removed. At the conclusion of the procedure, post-procedure CT of this region was obtained, which failed to demonstrate evidence of hematoma and appropriate coverage of the lesion with the ice-ball formation. Sterile dressings were applied."