Unsp fracture of unsp talus, subs for fx w nonunion

This code signifies a fracture of the talus (an ankle bone) where the specific type of fracture is not documented, and the affected talus is also unspecified. Crucially, this code is used when the patient is receiving follow-up care for this fracture, and the fracture has failed to heal properly (nonunion).

Apply this code for patients presenting for ongoing management of an unhealed talus fracture where the initial injury details are vague or unknown. This is appropriate when the documentation explicitly states "nonunion" and the encounter is not for the initial treatment of the fracture.

• Ensure documentation clearly indicates "nonunion" and that the encounter is subsequent to the initial injury.
• Avoid this code if the specific type of talus fracture (e.g., body, neck) or the laterality (right/left) is known; instead, use a more specific code.
• Always sequence this code after the primary reason for the encounter, if applicable.