| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| Posterior Fossa Decompression (PFD) | Posterior Fossa Decompression (PFD) | Posterior Fossa Decompression (PFD) | ||
| Posterior Fossa Revision (PFR) | Posterior Fossa Revision (PFR) | Posterior Fossa Revision (PFR) | ||
| Cranio-cervical Fusion (CCF) | Cranio-cervical Fusion (CCF) | Cranio-cervical Fusion (CCF) | ||
| Cranio-cervical Fusion Revision (CCFR) | Cranio-cervical Fusion Revision (CCFR) | Cranio-cervical Fusion Revision (CCFR) | ||
| Shunt Placement | Shunt Placement | Shunt Placement |