Oth osteopor w crnt path fx, r femur, subs for fx w nonunion

This code signifies a patient presenting with a pathological fracture of the right femur due to osteoporosis, where the fracture has failed to heal properly (nonunion). This encounter is for ongoing management of the nonunion after initial treatment.

Apply this code when a patient with osteoporosis is seen for follow-up care of a right femoral fracture that has not united, and the fracture was caused by the underlying osteoporosis. Documentation should clearly state "nonunion" and specify the right femur and the osteoporotic etiology.

• Requires a seventh character "K" for subsequent encounter with nonunion; ensure the correct seventh character is selected based on the encounter type.
• Always sequence this code after the underlying osteoporosis (e.g., M81.0 for age-related osteoporosis) if applicable and not already included in the M80 code.
• Distinguish from malunion (seventh character "P") or routine healing (seventh character "D").