Chronic embolism and thombos of int jugular vein, bilateral

This code describes the persistent presence of an occlusive or partially occlusive clot within both the left and right internal jugular veins. This chronic condition can lead to impaired venous drainage from the head and neck, potentially causing symptoms such as facial swelling, headaches, or elevated intracranial pressure.

Apply this code when documentation clearly indicates a long-standing or recurrent thrombotic event affecting both internal jugular veins. This diagnosis is typically supported by imaging studies (e.g., ultrasound, CT venography, MRI) demonstrating chronic thrombus formation, often with evidence of recanalization or collateral vessel development.

• Ensure documentation specifies "chronic" and "bilateral" involvement of the internal jugular veins; otherwise, consider acute or unilateral codes.
• Distinguish from acute embolism/thrombosis (I82.22- series) based on clinical presentation and imaging findings indicating chronicity.
• Code any associated underlying conditions, such as malignancy or hypercoagulable states, as additional diagnoses.