Disp fx of shaft of 1st MC bone, unsp hand, init for opn fx

This code signifies a break in the main body (shaft) of the first metacarpal bone, which is the bone connecting the thumb to the wrist. The fracture is displaced, meaning the bone fragments are not properly aligned, and it is an open fracture, indicating a break in the skin exposing the bone.

This code is appropriate for the initial treatment of a patient presenting with an open, displaced fracture of the first metacarpal shaft, where the specific hand (left or right) is not documented. This would typically be used in emergency department settings or during the initial surgical repair.

• Ensure documentation clearly states "displaced" and "open fracture" of the first metacarpal shaft.
• Only use this code for the initial encounter of treatment; subsequent encounters will require different seventh characters.
• If the laterality (left or right hand) is specified in the medical record, a more specific code should be chosen.