Injury of optic nerve, right eye, subsequent encounter

This code signifies damage to the right optic nerve, which transmits visual information from the eye to the brain. Such an injury can result in partial or complete vision loss in the affected eye, depending on the severity and location of the trauma. It specifically indicates that the patient is receiving follow-up care for this injury after the initial treatment phase.

Apply this code when a patient presents for ongoing management, rehabilitation, or follow-up of a previously diagnosed right optic nerve injury. Documentation should clearly state the patient's right eye is affected and that the encounter is not for the initial acute treatment. Examples include follow-up appointments for vision assessment, monitoring for complications, or physical therapy related to the injury.

• Ensure documentation specifies "right eye" and "subsequent encounter" to support this specific code.
• Distinguish from initial encounters (A) or sequela (S) codes, which are used for acute treatment or long-term complications, respectively.
• Always code the underlying cause of the optic nerve injury (e.g., trauma, tumor) as an additional diagnosis.