Phlebitis and thombophlb of calf muscular vein, bilateral

This code signifies inflammation of a vein (phlebitis) or inflammation with a blood clot formation (thrombophlebitis) specifically affecting the muscular veins within both calves. This condition often presents with pain, swelling, and tenderness in the affected calf muscles.

Use this code when documentation clearly indicates phlebitis or thrombophlebitis impacting the muscular veins of both lower legs, specifically the calf region. This diagnosis is typically supported by physical examination findings, patient symptoms, and sometimes imaging studies like ultrasound confirming the presence of thrombi in the muscular calf veins.

• Ensure documentation specifies "muscular vein" and "bilateral" to accurately assign this code.
• Distinguish from superficial thrombophlebitis (I80.0-) or deep vein thrombosis (DVT) of other lower extremity veins (I82.-).
• If laterality is not specified, query the provider for clarification; do not assume bilateral involvement.