Bennett's fracture, left hand, init for clos fx

This code signifies a fracture at the base of the first metacarpal bone (thumb) on the left hand, which extends into the carpometacarpal joint. It's an intra-articular fracture, often involving a small triangular fragment of the metacarpal base remaining attached to the trapezium.

Apply this code for a patient presenting with a newly diagnosed, closed Bennett's fracture of the left thumb. This is appropriate for the initial visit where the fracture is evaluated and treatment is planned or initiated.

• Ensure documentation specifies "left hand" and "closed fracture" for accurate coding.
• Confirm this is the patient's first encounter for this specific injury.
• Distinguish from Rolando's fracture, which is a comminuted intra-articular fracture of the first metacarpal base.