Injury of optic nerve, unspecified eye, subsequent encounter

This code signifies an injury to the optic nerve, affecting an unspecified eye, during a subsequent phase of care. It indicates that the patient is receiving follow-up treatment, rehabilitation, or monitoring for a previously sustained optic nerve injury. The specific nature or cause of the optic nerve damage is not detailed by this code.

Use this code for encounters where a patient is being treated for the long-term effects, complications, or recovery from an optic nerve injury. Documentation should clearly state "subsequent encounter" or indicate ongoing care for a previously diagnosed optic nerve injury. This code is appropriate when the laterality of the affected eye is not specified in the medical record.

• Ensure documentation explicitly states "subsequent encounter" for an optic nerve injury.
• Avoid using this code for the initial treatment of an acute optic nerve injury; use an acute encounter code instead.
• If the laterality (left or right eye) is documented, select a more specific code (S04.011D or S04.012D).