| 0N9F00Z | Drainage of Right Ethmoid Bone with Drainage Device, Open Approach |
| 0N9F0ZX | Drainage of Right Ethmoid Bone, Open Approach, Diagnostic |
| 0N9F0ZZ | Drainage of Right Ethmoid Bone, Open Approach |
| 0N9F30Z | Drainage of Right Ethmoid Bone with Drainage Device, Percutaneous Approach |
| 0N9F3ZZ | Drainage of Right Ethmoid Bone, Percutaneous Approach |
| 0N9F40Z | Drainage of Right Ethmoid Bone with Drainage Device, Percutaneous Endoscopic Approach |
| 0N9F4ZX | Drainage of Right Ethmoid Bone, Percutaneous Endoscopic Approach, Diagnostic |
| 0N9F4ZZ | Drainage of Right Ethmoid Bone, Percutaneous Endoscopic Approach |
