Fracture of base of skull, unspecified side, 7thK

This code signifies a fracture located at the base of the skull, where the specific side of the fracture is not documented. It indicates that the patient is receiving follow-up care for this fracture, and a complication of nonunion (failure of the bone to heal) has been identified.

Apply this code when a patient presents for ongoing treatment of a previously diagnosed basal skull fracture that has failed to unite. Documentation should clearly state "nonunion" of the fracture and specify that it's a subsequent encounter. This code is appropriate for scenarios like surgical intervention for nonunion or continued conservative management of the unhealed fracture.

• Ensure documentation explicitly states "nonunion" and "subsequent encounter" for the fracture.
• Do not use this code for initial treatment of the fracture or for routine follow-up without nonunion.
• Always sequence this code after any associated external cause codes, if applicable.