Fracture of vault of skull, init encntr for open fracture

This code signifies a break in the cranial vault, which includes the frontal, parietal, and occipital bones, that has an associated open wound exposing the fracture site or brain tissue. This injury is considered an acute, initial presentation requiring active treatment.

Apply this code for patients presenting with a newly diagnosed skull vault fracture where there is a direct communication between the fracture and the external environment. Documentation must clearly state "open fracture" and specify the initial encounter for treatment.

• Ensure documentation explicitly states "open fracture" to differentiate from closed fractures (S02.0XXA).
• The 7th character "B" indicates an initial encounter for an open fracture; use subsequent characters for follow-up care.
• Always code any associated intracranial injuries (e.g., contusion, hemorrhage) separately and sequence them after the fracture code if they are not integral to the fracture itself.