Injury of accessory nerve, unspecified side, subs encntr

This code signifies a documented injury to the accessory nerve (cranial nerve XI) that is not specified as occurring on the left or right side of the body. This particular code is used for a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase of the injury.

Use this code when a patient presents for follow-up care, such as physical therapy, medication management, or wound care, related to an accessory nerve injury where the laterality is not documented. Documentation should clearly indicate an accessory nerve injury and specify that this is not the initial treatment encounter.

• Ensure documentation explicitly states "subsequent encounter" or indicates ongoing care for the injury.
• Avoid using this code if the laterality (left or right) of the accessory nerve injury is specified; instead, use the more specific S04.71XD or S04.72XD.
• Pair this code with external cause codes (V, W, X, Y categories) to describe the circumstances of the injury, if applicable and documented.