Pathological fracture, left radius, subs for fx w delay heal

This code signifies a fracture of the left radius that occurred due to an underlying disease process, not from significant trauma. The fracture is currently in a phase of delayed healing, meaning the bone is not mending at the expected rate for its type and location.

Apply this code when a patient presents for follow-up care of a previously diagnosed pathological fracture of the left radius, and documentation explicitly states or implies that the healing process is prolonged or slower than anticipated. This typically involves ongoing treatment, monitoring, or interventions related to the delayed union.

• Ensure documentation clearly specifies "pathological fracture" and "delayed healing" for the left radius.
• Always sequence this code after the underlying disease causing the pathological fracture (e.g., osteoporosis, neoplasm).
• Distinguish from nonunion (M84.434K) or routine healing (M84.434D) which represent different stages of fracture healing.