Inj l int crtd, intcrn portion, NEC LOC status unknown, sqla

This code signifies a past injury to the intracranial segment of the left internal carotid artery, where the initial injury involved an unknown duration of loss of consciousness. It indicates that the patient is now experiencing a sequela, or a late effect, directly resulting from this previous trauma. This diagnosis points to ongoing complications or conditions stemming from the original arterial damage.

Apply this code when documentation clearly states a history of trauma to the intracranial portion of the left internal carotid artery, with the initial loss of consciousness status being unrecorded or unknown. The patient must be presenting with a current condition or symptom that is a direct consequence (sequela) of this prior injury. Supporting documentation would include operative reports, imaging studies confirming the arterial injury, and physician notes detailing the sequelae.

• Always assign a sequela code (S06.82AS) as the primary diagnosis when the patient is being treated for the residual effects of the injury.
• Ensure documentation explicitly states "sequela" or describes a chronic condition directly linked to the past injury.
• Do not use this code for acute injuries; refer to the acute injury codes within the S06 category for initial encounters.