Inj r int carotid, intcr w LOC >24 hr w ret consc lev, subs

This code signifies a traumatic injury to the intracranial segment of the right internal carotid artery, not otherwise specified, that resulted in a loss of consciousness exceeding 24 hours. The patient subsequently regained their pre-injury level of consciousness. This code is used for encounters following the initial treatment of the injury.

This code is appropriate for follow-up encounters where a patient is being managed for a previously diagnosed intracranial right internal carotid artery injury that caused prolonged loss of consciousness with eventual recovery. Documentation should clearly state the laterality, the specific vessel involved, the duration of the loss of consciousness, the return to baseline neurological status, and that this is not the initial encounter for the injury.

• Ensure documentation specifies "subsequent encounter" to differentiate from the initial treatment phase.
• Verify the duration of loss of consciousness (greater than 24 hours) and the return to pre-existing conscious level.
• Confirm the injury is to the intracranial portion of the right internal carotid artery and is not classified elsewhere.