2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Other Diseases Of Intestines And Peritoneum 560-569 > Anal Fissure And Fistula 565.* > 2006 ICD-9-CM Diagnosis 565.1 Anal fistula View the most recent version of ICD-9-CM 565.1 An abnormal anatomical passage connecting the RECTUM to the outside, with an orifice at the site of drainage. 565.1 is a specific code that can be used to specify a diagnosis 565.1 contains 7 index entries View the ICD-9-CM Volume 1 565.* hierarchy Alternate Terminology Fistula: anorectal rectal rectum to skin 565.1 Excludes fistula of rectum to internal organs­see Alphabetic Index ischiorectal fistula (566) rectovaginal fistula (619.1)  Index entries containing 565.1: Fistula (sinus) 686.9 anorectal 565.1 anus, anal (infectional) (recurrent) 565.1 congenital 751.5 tuberculous (see also Tuberculosis) 014.8 horseshoe 565.1 in ano 565.1 tuberculous (see also Tuberculosis) 014.8 perianal 565.1 perirectal 565.1 tuberculous (see also Tuberculosis) 014.8 rectum (to skin) 565.1 tuberculous (see also Tuberculosis) 014.8