Disp fx of neck of unsp talus, subs for fx w nonunion

This code signifies a fracture of the talar neck that is no longer in its anatomical alignment, and the bone fragments have failed to heal together after an initial treatment. The specific talus (left or right) is not documented.

Apply this code when a patient presents for ongoing management of a previously diagnosed and treated displaced talar neck fracture, and imaging or clinical assessment confirms that the fracture has not united. This is appropriate for follow-up visits, surgical interventions for nonunion, or conservative management of a confirmed nonunion.

• Ensure documentation explicitly states "nonunion" and "displaced" for the talar neck fracture.
• Confirm that the encounter is for subsequent care of the fracture, not the initial treatment.
• If the laterality of the talus is specified in the documentation, use a more specific code (e.g., S92.111K or S92.112K).