Phlebitis and thrombophlebitis of left iliac vein

This code signifies inflammation of the left iliac vein, often accompanied by the formation of a blood clot within the inflamed vessel. This condition is a form of deep vein thrombosis (DVT) affecting a major pelvic vein.

Use this code when documentation explicitly states phlebitis or thrombophlebitis affecting the left iliac vein. This typically occurs in patients presenting with left lower extremity swelling, pain, or tenderness, and is confirmed by imaging studies such as ultrasound or venography.

• Ensure laterality is clearly documented as "left" to support this specific code.
• Distinguish from phlebitis/thrombophlebitis of other venous sites; do not use for unspecified iliac vein involvement.
• Consider sequencing with codes for underlying causes (e.g., malignancy, hypercoagulable states) or complications (e.g., pulmonary embolism) if present.