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

This code signifies an intracranial injury to the left internal carotid artery, specifically its portion within the skull, that is not classified elsewhere. The injury results in a moderate to severe traumatic brain injury, evidenced by a loss of consciousness lasting between 6 and 24 hours. This diagnosis indicates the initial treatment phase for this specific vascular and neurological trauma.

Apply this code for patients presenting with an acute intracranial injury to the left internal carotid artery, confirmed by imaging (e.g., CT angiography, MRI). Documentation must clearly state the specific vessel involved, its intracranial location, and a documented loss of consciousness duration between 6 and 24 hours. This code is appropriate for the initial hospital admission or encounter for this injury.

• Ensure documentation specifies "left" internal carotid artery and "intracranial portion."
• Verify the exact duration of loss of consciousness; codes vary based on this timeframe.
• This is an "initial encounter" code; use subsequent encounter codes for follow-up care.