Phlebitis and thombophlb of deep vessels of unsp low extrm

This diagnosis code signifies inflammation of a vein accompanied by clot formation within deep veins of the lower extremity, where the specific deep vessel involved is not documented. It indicates a deep vein thrombosis (DVT) in an unspecified deep vessel of an unspecified leg.

Apply this code when documentation confirms a DVT in a deep vein of the lower extremity, but the physician's notes do not specify the exact vein (e.g., femoral, popliteal, tibial) or the laterality (left or right leg). This code is appropriate when the DVT is confirmed but further anatomical detail is lacking.

• Avoid using this code if the laterality (left or right) or the specific deep vessel is documented; instead, select a more specific code.
• Ensure the documentation clearly states "deep vein" to differentiate from superficial thrombophlebitis.
• Query the provider for more specific anatomical location and laterality if possible to allow for more precise coding.