2006 ICD-9-CM Volume 1 Diagnosis Codes Home > Diseases Of The Digestive System 520-579 > Other Diseases Of Intestines And Peritoneum 560-569 > Functional Digestive Disorders Not Elsewhere Classified 564.* > 2006 ICD-9-CM Diagnosis 564.8 Other specified functional disorders of intestine View the most recent version of ICD-9-CM 564.8 564.8 is a non-specific code that cannot be used to specify a diagnosis View the ICD-9-CM Volume 1 564.* hierarchy 564.8 Excludes malabsorption (579.0-579.9)