Path fx in neopltc dis, unsp tibia & fibula, 7thK

This code describes a fracture of an unspecified tibia and fibula that occurred due to an underlying neoplastic (cancerous) process, which has subsequently failed to heal properly (nonunion). The fracture is a direct consequence of the weakened bone structure caused by the tumor.

Use this code for follow-up encounters where a patient is being treated for a pathological fracture of the lower leg (tibia and fibula) caused by cancer, and the fracture has not united. Documentation should clearly state the pathological nature of the fracture, the specific bones involved (tibia and fibula), and the presence of nonunion.

• Always sequence the underlying neoplasm code first, followed by this code.
• Ensure documentation specifies "nonunion" for subsequent encounters; otherwise, a different seventh character may be appropriate.
• Distinguish from stress fractures or traumatic fractures in patients with cancer; this code is specifically for fractures caused by the neoplasm.