| 0N9G00Z | Drainage of Left Ethmoid Bone with Drainage Device, Open Approach |
| 0N9G0ZX | Drainage of Left Ethmoid Bone, Open Approach, Diagnostic |
| 0N9G0ZZ | Drainage of Left Ethmoid Bone, Open Approach |
| 0N9G30Z | Drainage of Left Ethmoid Bone with Drainage Device, Percutaneous Approach |
| 0N9G3ZZ | Drainage of Left Ethmoid Bone, Percutaneous Approach |
| 0N9G40Z | Drainage of Left Ethmoid Bone with Drainage Device, Percutaneous Endoscopic Approach |
| 0N9G4ZX | Drainage of Left Ethmoid Bone, Percutaneous Endoscopic Approach, Diagnostic |
| 0N9G4ZZ | Drainage of Left Ethmoid Bone, Percutaneous Endoscopic Approach |
