Unsp fracture of skull, subs encntr for fracture w nonunion

This code signifies an unspecific break in the skull bone that is not healing properly, and the patient is receiving ongoing treatment for this nonunion. It indicates a follow-up visit where the primary concern is the persistent failure of the skull fracture to unite.

Apply this code for subsequent encounters when a patient presents for management of a previously diagnosed, unspecified skull fracture that has failed to heal. Documentation should clearly state "nonunion" of an unspecified skull fracture and indicate that this is not the initial treatment encounter.

• Ensure documentation specifies "nonunion" and not merely delayed healing.
• Always sequence this code after the primary diagnosis for the reason for the encounter, if applicable.
• Verify laterality if the documentation provides it, as this code is for an unspecified location.