Disp fx of shaft of first MC bone, l hand, init for opn fx

This code signifies a break in the long, central part (shaft) of the first metacarpal bone (thumb) in the left hand. The fracture fragments are not properly aligned, and the skin and soft tissues overlying the fracture site are also compromised, exposing the bone.

This code is appropriate for the initial treatment of an open, displaced fracture of the left thumb's metacarpal shaft. This includes scenarios such as a crush injury or direct trauma resulting in an open wound communicating with the bone. It is used when the patient is receiving active treatment for the fracture.

• Ensure documentation clearly specifies "displaced" and "open fracture" for the left first metacarpal shaft.
• Confirm this is the initial encounter for active treatment of the fracture, not a subsequent visit for healing or sequelae.
• Distinguish from non-displaced fractures or closed fractures, which would require different codes.