DIFF Subgroup
A61B 17/1644 Full Title
Surgical instruments, devices or methods (A61B18/00 takes precedence; dental tools A61C3/00; eye surgery A61F9/007; ear surgery A61F11/20) > Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Note: 3 CPC extensions are marked as secondary classification only.