Disp fx of neck of first metacarpal bone, unsp hand, init

This code signifies a break in the neck of the first metacarpal bone (thumb) that is no longer in its anatomical alignment. The fracture is closed, meaning the skin remains intact, and this is the initial treatment encounter for the injury. The specific hand affected is not documented.

Apply this code for a patient presenting with a newly diagnosed, non-surgical, closed fracture of the thumb metacarpal neck where the fracture fragments are visibly separated or angled on imaging. This is appropriate for the initial evaluation and management of such an injury before definitive treatment.

• Ensure documentation specifies "displaced" and "closed" for accurate code assignment.
• Verify this is the initial encounter for the fracture; subsequent care would use a different seventh character.
• If the hand (left or right) is specified in the documentation, a more specific code should be used.