Acute embolism and thrombosis of unspecified vein

This code signifies the sudden blockage of an unidentifiable vein by an embolus (a traveling clot) or a thrombus (a stationary clot). It indicates an acute vascular event affecting venous circulation without specifying the anatomical location of the affected vessel.

This code is appropriate when documentation confirms an acute venous embolism or thrombosis, but the specific vein involved is not documented or cannot be determined. It is used in situations where a more specific anatomical site (e.g., deep vein of lower extremity, renal vein) is unknown.

• Avoid using this code if the specific vein involved is documented; always strive for the highest level of specificity.
• Review documentation carefully for any clues regarding the location of the embolism/thrombosis before resorting to an unspecified code.
• Consider querying the provider if the documentation is ambiguous regarding the anatomical site of the venous embolism or thrombosis.