 
| PCS-2023 > 0 > 09 > 09N > 09NB | 
| 09N | Ear, Nose, Sinus, Release | |
| Info: | Release: Freeing a body part from an abnormal physical constraint by cutting or by the use of force | |
| 09NB | Release, Mastoid Sinus, Right | |
| 09NB0 | Open | |
| 09NB0Z | No Device | |
| 09NB0ZZ | Release Right Mastoid Sinus, Open Approach | |
| 09NB3 | Percutaneous | |
| 09NB3Z | No Device | |
| 09NB3ZZ | Release Right Mastoid Sinus, Percutaneous Approach | |
| 09NB4 | Percutaneous Endoscopic | |
| 09NB4Z | No Device | |
| 09NB4ZZ | Release Right Mastoid Sinus, Percutaneous Endoscopic Approach | |
| 09NB8 | Via Natural or Artificial Opening Endoscopic | |
| 09NB8Z | No Device | |
| 09NB8ZZ | Release Right Mastoid Sinus, Via Natural or Artificial Opening Endoscopic | |
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