 
| PCS-2023 > 0 > 0N > 0NN > 0NN1 | 
| 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 | |
| 0NN1 | Release, Frontal Bone | |
| 0NN10 | Open | |
| 0NN10Z | No Device | |
| 0NN10ZZ | Release Frontal Bone, Open Approach | |
| 0NN13 | Percutaneous | |
| 0NN13Z | No Device | |
| 0NN13ZZ | Release Frontal Bone, Percutaneous Approach | |
| 0NN14 | Percutaneous Endoscopic | |
| 0NN14Z | No Device | |
| 0NN14ZZ | Release Frontal Bone, Percutaneous Endoscopic Approach | |
| ICD-10-CM-2023 Code Search Engine and PCS-2023 Code Search Engine |