Bennett's fracture, left hand, subs for fx w routn heal

This code signifies a fracture at the base of the first metacarpal bone, specifically on the left hand, that is currently undergoing routine healing. A Bennett's fracture is an intra-articular fracture-dislocation, typically caused by axial loading along the thumb.

Apply this code when documenting follow-up care for a patient with a previously diagnosed left Bennett's fracture that is progressing as expected without complications. This includes routine cast changes, physical therapy evaluations, or follow-up imaging showing callus formation.

• Ensure documentation clearly specifies the left hand and indicates routine healing.
• Distinguish from initial encounters (A or D) or encounters for delayed/nonunion healing (K, P, S).
• Always sequence this code after any relevant external cause codes, if applicable.