Embolism and thrombosis of unspecified artery

This code signifies a blockage within an artery caused by an embolus (a traveling clot or foreign body) or a thrombus (a clot formed in situ), where the specific artery affected is not documented. It represents an acute or chronic arterial occlusion of unknown location.

Assign this code when medical record documentation confirms an arterial embolism or thrombosis but does not specify the affected artery. This is often used in cases where the exact vessel cannot be identified through imaging or clinical examination, or when the documentation is incomplete.

• Avoid using this code if a more specific arterial site (e.g., femoral, renal, mesenteric) is documented; always code to the highest level of specificity.
• Query the provider for clarification on the specific artery involved if possible, as this code indicates a lack of detail.
• Consider sequencing this code as a primary diagnosis if it is the reason for the encounter, or as a secondary diagnosis if it is a co-morbidity.