Injury of other cranial nerves, left side, sequela

This code signifies a long-term or late effect resulting from a past injury to any cranial nerve on the left side, excluding the optic and acoustic nerves. It indicates a persistent neurological deficit or complication directly attributable to a previous trauma affecting these specific nerves.

Apply this code when documenting a current condition or symptom that is a residual effect of an old injury to a left-sided cranial nerve (other than optic or acoustic). Documentation should clearly link the current presentation to a prior traumatic event and specify the left side. This code is appropriate for chronic neurological impairments, such as persistent facial weakness or trigeminal neuralgia, following a head injury.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., G51.0 for Bell's palsy if it's a sequela of a cranial nerve injury).
• Ensure documentation explicitly states "sequela" or "due to previous injury" and specifies the left side.
• Distinguish from acute injuries (S04.892A, S04.892D) which are used for initial or subsequent encounters for the active injury.