Fracture of base of skull, unspecified side, 7thB

This code describes a traumatic break in the bones forming the base of the skull, where the fracture is open, meaning there's a communication between the fracture site and the outside environment or a mucous membrane. The specific side of the skull base involved is not documented. This is the initial encounter for treatment of this injury.

Use this code for a patient presenting for the first time with an open fracture of the skull base, without laterality specified in the medical record. Documentation should clearly indicate an open fracture and the initial phase of care. This code is appropriate when the physician's notes confirm a skull base fracture but do not specify left or right.

• Ensure documentation explicitly states "open fracture" to differentiate from closed fractures.
• Verify this is the initial encounter for treatment; subsequent encounters will require different seventh characters.
• If laterality (left or right) is documented, use a more specific code from the S02.11- or S02.12- series.