Inj l int crtd, intcr w LOC of 30 minutes or less, sequela

This code signifies a long-term effect or complication arising from a past injury to the intracranial segment of the left internal carotid artery, which was initially associated with a brief loss of consciousness (30 minutes or less). It indicates that the acute injury has resolved, but the patient is now experiencing residual symptoms or conditions directly attributable to that specific vascular trauma.

Apply this code when documenting a patient presenting with sequelae (e.g., neurological deficits, chronic pain, cognitive impairment) directly linked to a previously sustained intracranial left internal carotid artery injury that involved a short period of unconsciousness. Documentation should clearly state the causal relationship between the past injury and the current condition, and specify the left side and intracranial portion of the artery.

• Always sequence this sequela code after the code for the specific residual condition being treated (e.g., hemiparesis, aphasia).
• Ensure documentation explicitly states "sequela" or indicates a chronic condition resulting from a past injury, and specifies the left internal carotid artery, intracranial portion.
• Distinguish from acute injury codes (which would not use the "S" seventh character) and injuries to other carotid artery segments or sides.