Left retrocrural abscess at the T10-T11 level
Aspiration of retrocrural space
CT guidance of 17 gauge needle into the left retrocrural collection. 21 cc of fluid was aspirated. Hemostatis obtained.
Cultures negative.

Is 49180 the best code for this procedure?

The retrocrural space (RCS) is a small triangular region within the most inferior posterior mediastinum bordered by the two diaphragmatic crura.