Oth nondisp fx of base of first MC bone, unsp hand, init

This code signifies a fracture at the base of the first metacarpal (thumb bone) that is not displaced, meaning the bone fragments remain in their normal alignment. It specifically refers to fractures other than Bennett's or Rolando's, affecting an unspecified hand, and is for the initial treatment of a closed fracture (skin intact).

Apply this code when documenting a newly diagnosed, non-displaced fracture at the proximal end of the first metacarpal, excluding intra-articular fractures like Bennett's or comminuted fractures like Rolando's. This is appropriate for the initial encounter where the skin over the fracture site is unbroken.

• Ensure documentation clearly states "nondisplaced" and specifies the "base of the first metacarpal" to differentiate from other metacarpal fractures.
• Verify that the fracture is not a Bennett's or Rolando's fracture, as those have specific codes.
• Confirm this is the patient's initial encounter for this specific fracture and that it is a closed fracture. Subsequent encounters or open fractures require different codes.