Path fx in neopltc disease, l tibia, subs for fx w nonunion

This code signifies a fracture of the left tibia that occurred due to an underlying neoplastic process, such as a tumor or metastatic disease. The fracture has failed to heal properly, resulting in a nonunion, and the patient is presenting for follow-up care related to this unhealed fracture.

Apply this code for patients receiving ongoing treatment or evaluation for a left tibial pathological fracture caused by cancer, specifically when the fracture has not united. Documentation should clearly state a pathological fracture of the left tibia, evidence of nonunion, and indicate that the encounter is subsequent to the initial fracture treatment.

• Ensure documentation explicitly links the fracture to a neoplastic disease and specifies "nonunion" for the subsequent encounter.
• Always sequence the underlying neoplasm code first, followed by this code.
• Distinguish from malunion (M84.4-) or routine healing pathological fractures (M84.5- with appropriate 7th character).