| Section | 0 | Medical and Surgical |
| Body System | 0 | Central Nervous System |
| Operation | K | Map: Locating the route of passage of electrical impulses and/or locating functional areas in a body part |
| Body Part 0 Brain 7 Cerebral Hemisphere 8 Basal Ganglia 9 Thalamus A Hypothalamus B Pons C Cerebellum D Medulla Oblongata |
Approach 0 Open 3 Percutaneous 4 Percutaneous Endoscopic |
Device Z No Device |
Qualifier Z No Qualifier |