 
| PCS-2023 > 0 > 00 > 00N > 00NG | 
| 00N | Central Nervous System and Cranial Nerves, Release | |
| Info: | Release: Freeing a body part from an abnormal physical constraint by cutting or by the use of force | |
| 00NG | Release, Optic Nerve | |
| 00NG0 | Open | |
| 00NG0Z | No Device | |
| 00NG0ZZ | Release Optic Nerve, Open Approach | |
| 00NG3 | Percutaneous | |
| 00NG3Z | No Device | |
| 00NG3ZZ | Release Optic Nerve, Percutaneous Approach | |
| 00NG4 | Percutaneous Endoscopic | |
| 00NG4Z | No Device | |
| 00NG4ZZ | Release Optic Nerve, Percutaneous Endoscopic Approach | |
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