Oth disp fx of base of first MC bone, left hand, init

This code signifies a fracture at the very bottom of the first metacarpal bone (thumb bone) in the left hand, where the bone fragments are no longer in their normal anatomical alignment. It specifically indicates that this is the initial visit for a fracture that has not broken through the skin.

This code is appropriate for documenting the initial treatment of a closed, displaced fracture of the base of the left thumb metacarpal, such as a Rolando fracture or a comminuted Bennett's fracture. It should be used when the patient presents for the first time for this specific injury.

• Ensure documentation specifies "displaced" and "closed" for accurate code assignment.
• Verify the laterality is "left hand" and the specific bone is the "first metacarpal base."
• The "A" suffix indicates an initial encounter for active treatment of the fracture.