| Section | 0 | Medical and Surgical |
| Body System | 0 | Central Nervous System |
| Operation | 1 | Bypass: Altering the route of passage of the contents of a tubular body part |
| Body Part 6 Cerebral Ventricle |
Approach 0 Open 3 Percutaneous |
Device 7 Autologous Tissue Substitute J Synthetic Substitute K Nonautologous Tissue Substitute |
Qualifier 0 Nasopharynx 1 Mastoid Sinus 2 Atrium 3 Blood Vessel 4 Pleural Cavity 5 Intestine 6 Peritoneal Cavity 7 Urinary Tract 8 Bone Marrow B Cerebral Cisterns |
| Body Part U Spinal Canal |
Approach 0 Open 3 Percutaneous |
Device 7 Autologous Tissue Substitute J Synthetic Substitute K Nonautologous Tissue Substitute |
Qualifier 4 Pleural Cavity 6 Peritoneal Cavity 7 Urinary Tract 9 Fallopian Tube |