Frontal Sinus, Left
- 09NT0 - Open
- 09NT0Z
- 09NT0ZZ - Release Frontal Sinus, Left to No Qualifier with No Device, Open Approach
- 09NT3 - Percutaneous
- 09NT3Z
- 09NT3ZZ - Release Frontal Sinus, Left to No Qualifier with No Device, Percutaneous Approach
- 09NT4 - Percutaneous Endoscopic
- 09NT4Z
- 09NT4ZZ - Release Frontal Sinus, Left to No Qualifier with No Device, Percutaneous Endoscopic Approach
- 09NT8 - Via Natural or Artificial Opening Endoscopic
- 09NT8Z
- 09NT8ZZ - Release Frontal Sinus, Left to No Qualifier with No Device, Via Natural or Artificial Opening Endoscopic Approach