Acute embolism and thrombosis of other thoracic veins

This code signifies the sudden blockage of a non-specified thoracic vein, excluding the superior vena cava, by an embolus (a traveling clot) or a thrombus (a stationary clot). This acute event disrupts blood flow, potentially leading to venous congestion and organ dysfunction within the chest cavity.

Apply this code when documentation clearly indicates an acute embolic or thrombotic event affecting a thoracic vein other than the superior vena cava. This includes conditions like acute subclavian vein thrombosis or acute axillary vein thrombosis, when the specific vein is not further detailed. Supporting documentation should specify the acute nature and the thoracic location of the venous occlusion.

• Ensure documentation specifies "acute" to differentiate from chronic conditions.
• Do not use if the superior vena cava is the affected vessel; a more specific code exists for that.
• Code any associated underlying conditions, such as malignancy or hypercoagulable states, as additional diagnoses.