Phlebitis and thrombophlebitis of iliac vein, bilateral

This code signifies the presence of inflammation and blood clot formation within both the right and left iliac veins. This condition, known as phlebitis and thrombophlebitis, affects the major veins located in the pelvic region that drain blood from the lower limbs.

Use this code when documentation clearly indicates a diagnosis of thrombophlebitis affecting both the right and left iliac veins. This typically occurs in patients presenting with bilateral lower extremity swelling, pain, and tenderness, and is often confirmed by imaging studies such as duplex ultrasound or venography.

• Ensure documentation specifies bilateral involvement of the iliac veins; otherwise, a unilateral code should be used.
• Do not confuse with deep vein thrombosis (DVT) of other lower extremity veins; this code is specific to the iliac veins.
• Consider sequencing this code after any underlying cause, such as malignancy or hypercoagulable state, if applicable and documented.