The ICD-9 code range DISEASES OF VEINS AND LYMPHATICS, AND OTHER DISEASES OF CIRCULATORY SYSTEM for 451-459 is medical classification list by the World Health Organization (WHO).
Phlebitis and thrombophlebitis
Phlebitis and thrombophlebitis of deep veins of lower extremities
Phlebitis and thrombophlebitis of other sites
Phlebitis and thrombophlebitis of iliac vein
Phlebitis and thrombophlebitis of superficial veins of upper extremities
Phlebitis and thrombophlebitis of deep veins of upper extremities
Phlebitis and thrombophlebitis of upper extremities, unspecified
Phlebitis and thrombophlebitis of other sites
Other venous embolism and thrombosis
Other venous embolism and thrombosis : Venous embolism and thrombosis of deep vessels of lower extremity
Other venous embolism and thrombosis : Chronic venous embolism and thrombosis of deep vessels of lower extremity
Chronic venous embolism and thrombosis of other specified vessels
Chronic venous embolism and thrombosis of superficial veins of upper extremity
Chronic venous embolism and thrombosis of deep veins of upper extremity
Chronic venous embolism and thrombosis of upper extremity, unspecified
Chronic venous embolism and thrombosis of axillary veins
Chronic venous embolism and thrombosis of subclavian veins
Chronic venous embolism and thrombosis of internal jugular veins
Chronic venous embolism and thrombosis of other thoracic veins
Chronic venous embolism and thrombosis of other specified veins
Embolism and thrombosis of other specified veins
Acute venous embolism and thrombosis of superficial veins of upper extremity
Acute venous embolism and thrombosis of deep veins of upper extremity
Acute venous embolism and thrombosis of upper extremity, unspecified
Acute venous embolism and thrombosis of axillary veins
Acute venous embolism and thrombosis of subclavian veins
Acute venous embolism and thrombosis of internal jugular veins
Acute venous embolism and thrombosis of other thoracic veins
Acute venous embolism and thrombosis of other specified veins
Varicose veins of lower extremities
Hemorrhoids
Varicose veins of other sites
Esophageal varices in diseases classified elsewhere
Noninfectious disorders of lymphatic channels
Hypotension
Other disorders of circulatory system
Postphlebetic syndrome
Chronic venous hypertension (idiopathic)
Other specified disorders of circulatory system