Pathological fracture, right fibula, sequela

This code signifies a pathological fracture of the right fibula where the acute phase of the injury has passed, and the patient is now experiencing a late effect or complication directly attributable to the original fracture. This could include nonunion, malunion, chronic pain, or functional impairment resulting from the fracture.

Apply this code when documentation clearly indicates a current condition or symptom that is a direct consequence of a previously sustained pathological fracture of the right fibula. This is typically used for follow-up encounters after the initial healing period, where the sequela is being addressed. Documentation should specify the right fibula and explicitly link the current issue to the prior pathological fracture.

• Requires a seventh character "S" for sequela, indicating a late effect.
• Always sequence this code after the code(s) identifying the specific sequela (e.g., M84.463S for the fracture, followed by M21.061 for nonunion of the right fibula).
• Distinguish from active pathological fractures (initial or subsequent encounter) which use different seventh characters.