 
| PCS-2023 > 0 > 0N > 0NN > 0NN7 | 
| 0NN | Head and Facial Bones, Release | |
| Info: | Release: Freeing a body part from an abnormal physical constraint by cutting or by the use of force | |
| 0NN7 | Release, Occipital Bone | |
| 0NN70 | Open | |
| 0NN70Z | No Device | |
| 0NN70ZZ | Release Occipital Bone, Open Approach | |
| 0NN73 | Percutaneous | |
| 0NN73Z | No Device | |
| 0NN73ZZ | Release Occipital Bone, Percutaneous Approach | |
| 0NN74 | Percutaneous Endoscopic | |
| 0NN74Z | No Device | |
| 0NN74ZZ | Release Occipital Bone, Percutaneous Endoscopic Approach | |
| ICD-10-CM-2023 Code Search Engine and PCS-2023 Code Search Engine |