Acute embolism and thrombosis of deep vein of unsp low extrm

This diagnosis code signifies the sudden blockage of a deep vein in an unspecified lower extremity due to a blood clot (embolism or thrombosis). It indicates an acute event affecting a deep vein other than the femoral, popliteal, or tibial veins, where the specific location in the lower limb is not documented.

Use this code when documentation confirms an acute deep vein thrombosis (DVT) or embolism in a lower extremity, but the specific deep vein involved is not precisely identified (e.g., "acute DVT of unspecified deep vein of the left leg"). This code is appropriate when the laterality of the affected limb is also not specified.

• Ensure the documentation explicitly states "acute" to differentiate from chronic conditions.
• Avoid using this code if a more specific deep vein (e.g., femoral, popliteal, tibial) or laterality (right/left) is documented; instead, use a more precise code from the I82.4- series.
• Always sequence this code after any underlying cause of the embolism or thrombosis, if known and documented.