Inj l int crtd, intcr w LOC >24 hr w ret consc lev, sequela

This code signifies a sequela of a traumatic injury to the intracranial segment of the left internal carotid artery, not classified elsewhere, that initially resulted in a loss of consciousness exceeding 24 hours but with subsequent full recovery of the patient's pre-injury conscious level. It describes the long-term effects or complications arising from such an injury.

Use this code when documenting a patient's current condition that is a direct consequence or late effect of a previously sustained severe intracranial left internal carotid artery injury. The medical record must clearly indicate a history of prolonged loss of consciousness (over 24 hours) from the initial injury, and that the patient has since returned to their baseline conscious state.

• Ensure documentation explicitly states "sequela" or "late effect" of the initial injury.
• Verify the laterality (left) and the specific intracranial portion of the internal carotid artery.
• Confirm the initial loss of consciousness duration was greater than 24 hours and that the patient's consciousness has returned to pre-existing levels.