Oth injury of unspecified vertebral artery, sequela

This code signifies a long-term complication or late effect resulting from a previously sustained injury to an unspecified vertebral artery, where the specific type of injury is not otherwise classified. This could include chronic pain, neurological deficits, or other persistent issues directly attributable to the original arterial trauma. The "sequela" designation indicates that the acute phase of the injury has passed, and the patient is now experiencing residual effects.

Use this code when documenting a patient presenting with a chronic condition or persistent symptom directly linked to a past injury of an unspecified vertebral artery. Documentation should clearly state the causal relationship between the old injury and the current sequela, and specify that the acute injury has resolved. This code is appropriate when the exact nature of the vertebral artery injury (e.g., dissection, laceration) was not specified or is unknown.

• Always sequence the sequela code first, followed by a code for the specific manifestation of the sequela (e.g., chronic pain, neurological deficit).
• Ensure documentation explicitly states "sequela," "late effect," or similar terminology to support the use of the 7th character 'S'.
• Distinguish from acute injuries; this code is only for residual conditions after the initial injury has healed.