Injury of r int carotid, intcr w LOC of 6-24 hrs, init

This code signifies a traumatic injury to the intracranial segment of the right internal carotid artery, not specified as a dissection or other specific type, resulting in a prolonged loss of consciousness lasting between 6 and 24 hours. This injury is typically caused by blunt or penetrating head trauma and can lead to severe neurological deficits due to compromised cerebral blood flow.

Use this code for patients presenting with an acute traumatic injury to the right intracranial internal carotid artery, confirmed by imaging (e.g., CTA, MRA, angiography), and a documented period of unconsciousness between 6 and 24 hours. The "A" suffix indicates this is the initial encounter for this specific injury.

• Ensure documentation clearly specifies the right internal carotid artery and its intracranial portion.
• Verify the duration of loss of consciousness falls precisely within the 6 to 24-hour window.
• Always sequence this code after the primary head injury code (e.g., traumatic brain injury, skull fracture).