Nondisp fx of shaft of first MC bone, left hand, init

This code signifies a break in the long, central part (shaft) of the thumb bone (first metacarpal) in the left hand. The bone fragments remain in their normal anatomical alignment, meaning the fracture is not displaced.

Apply this code for initial treatment of a newly diagnosed, non-displaced shaft fracture of the left first metacarpal. This typically occurs following direct trauma or a fall onto the hand. It is used when the skin over the fracture is intact (closed fracture).

• Ensure the documentation specifies "nondisplaced" and "shaft" for the first metacarpal.
• Verify the laterality is "left hand" and the encounter is "initial."
• Confirm the fracture is "closed" as opposed to an open fracture.