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

This code signifies a chronic or late effect of a traumatic injury to the intracranial segment of the right internal carotid artery. The initial injury resulted in a prolonged loss of consciousness exceeding 24 hours, from which the patient eventually recovered to their baseline mental status. This code is used when the sequelae of this specific injury are being addressed.

This code is appropriate for encounters where a patient is being treated for long-term complications or residual effects directly attributable to a past traumatic injury of the right intracranial internal carotid artery. Documentation must clearly indicate a history of such an injury with a loss of consciousness greater than 24 hours and subsequent return to pre-existing conscious level, and that the current encounter addresses a sequela.

• Requires a seventh character "S" for sequela, indicating a late effect of the initial injury.
• Do not use for the initial acute injury; this code is exclusively for complications or conditions arising after the acute phase has passed.
• Ensure documentation specifies the intracranial portion of the internal carotid artery and the right side.