451 Phlebitis and thrombophlebitis 
451.0 Phlebitis and thrombophlebitis of superficial vessels of lower extremities convert 451.0 to ICD-10-CM 451.1 Phlebitis and thrombophlebitis of deep veins of lower extremities 
451.11 Phlebitis and thrombophlebitis of femoral vein (deep) (superficial) convert 451.11 to ICD-10-CM
451.19 Phlebitis and thrombophlebitis of deep veins of lower extremities, other convert 451.19 to ICD-10-CM 451.2 Phlebitis and thrombophlebitis of lower extremities, unspecified convert 451.2 to ICD-10-CM 451.8 Phlebitis and thrombophlebitis of other sites 451.81 Phlebitis and thrombophlebitis of iliac vein convert 451.81 to ICD-10-CM 451.82 Phlebitis and thrombophlebitis of superficial veins of upper extremities convert 451.82 to ICD-10-CM 451.83 Phlebitis and thrombophlebitis of deep veins of upper extremities convert 451.83 to ICD-10-CM 451.84 Phlebitis and thrombophlebitis of upper extremities, unspecified convert 451.84 to ICD-10-CM 451.89 Phlebitis and thrombophlebitis of other sites convert 451.89 to ICD-10-CM 451.9 Phlebitis and thrombophlebitis of unspecified site convert 451.9 to ICD-10-CM