Injury of trigeminal nerve, unspecified side, init encntr

This code signifies damage to the trigeminal nerve (cranial nerve V) resulting from an injury, where the specific side of the face affected is not documented. The trigeminal nerve is responsible for sensation in the face and motor functions such as biting and chewing. This code is used for the initial treatment of such an injury.

Apply this code when a patient presents with a new injury to the trigeminal nerve, and the medical record does not specify whether the injury is to the left or right side. Documentation should clearly indicate an acute injury to the trigeminal nerve, such as from trauma, surgery, or an accident, and that this is the first time the patient is receiving care for this specific injury.

• Ensure documentation explicitly states "unspecified side" or lacks laterality for the trigeminal nerve injury.
• Distinguish from trigeminal neuralgia (G50.0), which is a pain condition, not an acute injury.
• Sequence this code first when it represents the primary reason for the encounter and is an acute injury.