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

This code signifies a fracture of the base of the first metacarpal bone (thumb) on the left hand, which extends into the carpometacarpal joint. It specifically indicates that the patient is in a phase of treatment where the fracture is not healing at the expected rate.

Apply this code when a patient with a previously diagnosed left Bennett's fracture presents for follow-up care, and clinical or radiological evidence confirms delayed union. This includes situations where the patient is undergoing continued conservative management, physical therapy, or surgical intervention specifically addressing the slow healing process.

• Ensure documentation clearly specifies "left hand" and "delayed healing" for the Bennett's fracture.
• Verify that this is a subsequent encounter, not the initial treatment for the acute fracture.
• Always sequence this code with any external cause codes and place of occurrence codes, if applicable.