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

This code signifies a break in the main body (shaft) of the first metacarpal bone (thumb) in the right hand, where the bone fragments are no longer in their normal alignment. Critically, this fracture is open, meaning there is a wound communicating with the fracture site, and this is the first time the patient is receiving treatment for this specific injury.

Apply this code for patients presenting with an open, displaced fracture of the right thumb's metacarpal shaft, such as from a crush injury or direct trauma, during their initial visit for treatment. This includes scenarios where surgical intervention or initial wound care and stabilization are performed.

• Ensure documentation clearly specifies "displaced" and "open fracture" for the right first metacarpal shaft.
• The "B" seventh character indicates an initial encounter for an open fracture; verify this is the first time the patient is being treated for this specific injury.
• Distinguish from closed fractures, non-displaced fractures, or fractures of other metacarpals or parts of the first metacarpal (e.g., base, head).