| 099T00Z | Drainage of Left Frontal Sinus with Drainage Device, Open Approach |
| 099T0ZX | Drainage of Left Frontal Sinus, Open Approach, Diagnostic |
| 099T30Z | Drainage of Left Frontal Sinus with Drainage Device, Percutaneous Approach |
| 099T3ZX | Drainage of Left Frontal Sinus, Percutaneous Approach, Diagnostic |
| 099T3ZZ | Drainage of Left Frontal Sinus, Percutaneous Approach |
| 099T40Z | Drainage of Left Frontal Sinus with Drainage Device, Percutaneous Endoscopic Approach |
| 099T4ZX | Drainage of Left Frontal Sinus, Percutaneous Endoscopic Approach, Diagnostic |
| 099T4ZZ | Drainage of Left Frontal Sinus, Percutaneous Endoscopic Approach |
| 099T70Z | Drainage of Left Frontal Sinus with Drainage Device, Via Natural or Artificial Opening |
| 099T7ZX | Drainage of Left Frontal Sinus, Via Natural or Artificial Opening, Diagnostic |
| 099T7ZZ | Drainage of Left Frontal Sinus, Via Natural or Artificial Opening |
| 099T80Z | Drainage of Left Frontal Sinus with Drainage Device, Via Natural or Artificial Opening Endoscopic |
| 099T8ZX | Drainage of Left Frontal Sinus, Via Natural or Artificial Opening Endoscopic, Diagnostic |
| 099T8ZZ | Drainage of Left Frontal Sinus, Via Natural or Artificial Opening Endoscopic |
