Other diseases of intestines (K55-K64)

ICD-10 codes K55-K64 are used to classify various diseases of the intestines and anorectal regions, excluding common intestinal infections or inflammatory bowel diseases. This range covers vascular intestinal disorders, obstructions, diverticular diseases, irritable bowel syndrome, functional intestinal problems, and anorectal conditions such as fissures, fistulas, abscesses, and hemorrhoids.

This chapter addresses vascular disorders (K55) like acute and chronic ischemia or infarction of the small or large intestine, also known by terms like visceral ischemia or mesenteric vein thrombosis. Codes under K56 depict intestinal obstructions and paralytic ileus without hernia, including conditions such as fecal impaction, adhesions, and volvulus. The K57 series details diverticular diseases of the small and large intestine with or without complications like perforation, abscess, or bleeding. K58 covers variants of irritable bowel syndrome, like diarrhea and constipation types. Functional intestinal disorders like constipation, megacolon, and neurogenic bowel appear under K59. The codes from K60-K64 focus on conditions affecting the anus and rectum, including anal fissures, fistulas, abscesses, prolapse, stenosis, hemorrhage, ulcerations, radiation proctitis, and hemorrhoids. These codes assist coders and clinicians in accurately identifying and documenting diverse intestinal and anorectal disorders, guiding treatment and billing processes.