Oth fx first metacarpal bone, left hand, init for opn fx

This code signifies an open fracture of the first metacarpal bone (thumb) in the left hand, meaning the skin and soft tissue have been broken, exposing the bone. This type of fracture is typically caused by significant trauma and carries an increased risk of infection.

Apply this code for a patient presenting with a newly diagnosed, open fracture of the left thumb metacarpal. This is appropriate for the initial treatment encounter, such as in an emergency department or during the first surgical repair.

• Ensure documentation clearly specifies "open" and "left hand" for accurate assignment.
• Confirm this is the initial encounter for treatment of the fracture, not a subsequent visit for follow-up care.
• Distinguish from Bennett's or Rolando fractures, which have specific codes within the S62.2 category.