Phlebitis and thrombophlebitis of left calf muscular vein

This diagnosis code signifies inflammation of a vein in the left calf, specifically within the muscle, accompanied by the formation of a blood clot. This condition, often referred to as deep vein thrombosis (DVT) of the calf muscle, can cause pain, swelling, and tenderness in the affected leg. It is distinct from superficial thrombophlebitis.

Use this code when documentation clearly indicates a diagnosis of phlebitis and thrombophlebitis affecting a muscular vein in the left calf. Supporting documentation should include physician notes detailing the location (left calf), the nature of the vein (muscular), and the presence of both inflammation and a clot. Imaging studies confirming a DVT in a left calf muscular vein would also support its use.

• Ensure documentation specifies "muscular vein" to differentiate from other calf veins.
• Verify the laterality is explicitly stated as "left" to avoid coding errors.
• Distinguish from superficial thrombophlebitis (I80.0-) or unspecified deep vein thrombosis (I82.4-).