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2007 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.* > 2007 ICD-9-CM Diagnosis 455.4 External thrombosed hemorrhoids  On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date. The 2009 version of ICD-9-CM 455.4 can be accessed here. 455.4 is a specific code that can be used to specify a diagnosis 455.4 contains 2 index entries View the ICD-9-CM Volume 1 455.* hierarchy Index entries containing 455.4: Hemorrhoids (anus) (rectum) (without complication) 455.6 external 455.3 thrombosed 455.4 thrombosed NEC 455.7 external 455.4