Stress fracture, left hand, subs for fx w delay heal

This code signifies a stress fracture affecting the bones of the left hand that is currently undergoing treatment for delayed healing. A stress fracture is a small crack in a bone, often caused by repetitive stress or overuse, rather than a single traumatic event. "Delayed healing" indicates that the fracture is not mending within the expected timeframe.

Apply this code when a patient presents for follow-up care of a previously diagnosed stress fracture of the left hand, and the physician's documentation explicitly states that the healing process is prolonged or slower than anticipated. This code is appropriate for encounters where treatment for the delayed union is being managed, such as cast changes, physical therapy, or medication adjustments.

• Ensure documentation specifies "left hand" and "stress fracture" with clear indication of delayed healing.
• This is a "subsequent encounter" code, so it should not be used for the initial diagnosis of the stress fracture.
• Always sequence this code after any relevant external cause codes (e.g., activity codes) if applicable and documented.