Pathological fracture in other disease, right ulna, sequela

This code signifies a healed or chronic pathological fracture of the right ulna that occurred due to an underlying systemic disease, rather than trauma. It indicates that the patient is experiencing a long-term effect or complication directly resulting from this past fracture. The "sequela" aspect implies that the acute phase of the fracture has passed, and the patient is now being treated for residual issues.

Apply this code when a patient presents with a chronic condition or complication directly attributable to a previously sustained pathological fracture of the right ulna. Documentation should clearly state the fracture's pathological origin (e.g., due to osteoporosis, metastatic cancer, Paget's disease) and that the current encounter addresses a sequela, such as malunion, nonunion, chronic pain, or functional impairment related to the healed fracture.

• Always sequence this sequela code after the code for the underlying disease that caused the pathological fracture.
• Ensure documentation explicitly states the fracture is "pathological" and identifies the specific underlying disease.
• Do not use this code for acute or active pathological fractures; those require codes from the M84.4- or M84.5- categories.