Inj l int carotid, intcr w LOC of 1-5 hrs 59 min, sequela

This code signifies a chronic or late effect resulting from a traumatic injury to the intracranial segment of the left internal carotid artery, which was initially associated with a loss of consciousness lasting between one and six hours. This injury is not further specified by other, more detailed codes. The sequela could manifest as neurological deficits, vascular complications, or other long-term consequences directly attributable to the original injury.

This code is appropriate for documenting the long-term effects or complications of a past traumatic intracranial left internal carotid artery injury with a specific duration of unconsciousness. It should be used when the patient is presenting for treatment of these residual conditions, not for the initial acute injury. Documentation must clearly state the original injury, the duration of loss of consciousness, and the current sequela being treated.

• Ensure the documentation explicitly states "sequela" or "late effect" and links the current condition to the past intracranial carotid artery injury.
• Verify the original injury involved the intracranial portion of the left internal carotid artery and the loss of consciousness was specifically between 1 and 5 hours 59 minutes.
• Always sequence this sequela code first, followed by codes for the specific manifestations of the sequela (e.g., hemiplegia, aphasia, cognitive deficits).