Central Nervous System and Cranial Nerves
001 Bypass
002 Change
005 Destruction
007 Dilation
008 Division
009 Drainage
00B Excision
00C Extirpation
00D Extraction
00F Fragmentation
00H Insertion
00J Inspection
00K Map
00N Release
00P Removal
00Q Repair
00R Replacement
00S Reposition
00T Resection
00U Supplement
00W Revision
00X Transfer