| Section | 0 | Medical and Surgical |
| Body System | 0 | Central Nervous System |
| Operation | W | Revision: Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device |
| Body Part 0 Brain V Spinal Cord |
Approach 0 Open 3 Percutaneous 4 Percutaneous Endoscopic X External |
Device 0 Drainage Device 2 Monitoring Device 3 Infusion Device 7 Autologous Tissue Substitute J Synthetic Substitute K Nonautologous Tissue Substitute M Neurostimulator Lead |
Qualifier Z No Qualifier |
| Body Part 6 Cerebral Ventricle U Spinal Canal |
Approach 0 Open 3 Percutaneous 4 Percutaneous Endoscopic X External |
Device 0 Drainage Device 2 Monitoring Device 3 Infusion Device J Synthetic Substitute M Neurostimulator Lead |
Qualifier Z No Qualifier |
| Body Part E Cranial Nerve |
Approach 0 Open 3 Percutaneous 4 Percutaneous Endoscopic X External |
Device 0 Drainage Device 2 Monitoring Device 3 Infusion Device 7 Autologous Tissue Substitute M Neurostimulator Lead |
Qualifier Z No Qualifier |