| 099X00Z | Drainage of Left Sphenoid Sinus with Drainage Device, Open Approach |
| 099X0ZX | Drainage of Left Sphenoid Sinus, Open Approach, Diagnostic |
| 099X0ZZ | Drainage of Left Sphenoid Sinus, Open Approach |
| 099X30Z | Drainage of Left Sphenoid Sinus with Drainage Device, Percutaneous Approach |
| 099X3ZX | Drainage of Left Sphenoid Sinus, Percutaneous Approach, Diagnostic |
| 099X40Z | Drainage of Left Sphenoid Sinus with Drainage Device, Percutaneous Endoscopic Approach |
| 099X4ZX | Drainage of Left Sphenoid Sinus, Percutaneous Endoscopic Approach, Diagnostic |
| 099X4ZZ | Drainage of Left Sphenoid Sinus, Percutaneous Endoscopic Approach |
| 099X70Z | Drainage of Left Sphenoid Sinus with Drainage Device, Via Natural or Artificial Opening |
| 099X7ZX | Drainage of Left Sphenoid Sinus, Via Natural or Artificial Opening, Diagnostic |
| 099X7ZZ | Drainage of Left Sphenoid Sinus, Via Natural or Artificial Opening |
| 099X80Z | Drainage of Left Sphenoid Sinus with Drainage Device, Via Natural or Artificial Opening Endoscopic |
| 099X8ZX | Drainage of Left Sphenoid Sinus, Via Natural or Artificial Opening Endoscopic, Diagnostic |
| 099X8ZZ | Drainage of Left Sphenoid Sinus, Via Natural or Artificial Opening Endoscopic |
