2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Circulatory System 390-459 > Diseases Of Veins And Lymphatics, And Other Diseases Of Circulatory System 451-459 > Hemorrhoids 455.* > 2006 ICD-9-CM Diagnosis 455.1 Internal thrombosed hemorrhoids View the most recent version of ICD-9-CM 455.1 455.1 is a specific code that can be used to specify a diagnosis 455.1 contains 2 index entries View the ICD-9-CM Volume 1 455.* hierarchy  Index entries containing 455.1: Hemorrhoids (anus) (rectum) (without complication) 455.6 internal 455.0 thrombosed 455.1 thrombosed NEC 455.7 internal 455.1