Unspecified injury of left carotid artery, sequela

This code signifies a long-term complication or late effect stemming from an unspecified injury to the left carotid artery. This could include conditions like chronic dissection, pseudoaneurysm, stenosis, or occlusion that developed as a direct consequence of a prior, acute traumatic event to the artery. The original injury itself is no longer active.

Apply this code when documenting a current condition that is a residual effect of a past, unspecified injury to the left carotid artery. This is appropriate when the patient presents for evaluation or treatment of these chronic sequelae. Documentation should clearly link the current carotid artery pathology to a previous traumatic event.

• Always sequence the sequela code first, followed by a code for the specific nature of the sequela (e.g., I65.22 for occlusion of left carotid artery).
• Ensure documentation specifies "left" carotid artery; otherwise, an unspecified laterality code may be more appropriate.
• Do not use for acute injuries; this code is exclusively for late effects.