Disp fx of base of third MC bone, left hand, init for opn fx

This code signifies a break in the base of the third metacarpal bone in the left hand, where the bone fragments are no longer in their normal anatomical alignment. It specifically indicates that the skin and soft tissues overlying the fracture site have been compromised, exposing the bone to the external environment. This is the initial presentation for treatment of this injury.

Apply this code when documenting the initial treatment for a patient presenting with a left-hand injury where imaging confirms a fracture at the base of the third metacarpal. Crucially, the medical record must explicitly state that the fracture is displaced and that it is an open fracture, meaning there's a wound communicating with the fracture site.

• Ensure documentation clearly specifies "displaced" and "open fracture" for the base of the third metacarpal.
• Verify laterality (left hand) is accurately documented.
• Confirm this is the initial encounter for treatment; subsequent care would use a different seventh character.