| K5713 | Diverticulitis of small intestine without perforation or abscess with bleeding |
| K572 | Diverticulitis of large intestine with perforation and abscess |
| K5720 | Diverticulitis of large intestine with perforation and abscess without bleeding |
| K5721 | Diverticulitis of large intestine with perforation and abscess with bleeding |
| K573 | Diverticular disease of large intestine without perforation or abscess |
| K5730 | Diverticulosis of large intestine without perforation or abscess without bleeding |
| K5731 | Diverticulosis of large intestine without perforation or abscess with bleeding |
| K5732 | Diverticulitis of large intestine without perforation or abscess without bleeding |
| K5733 | Diverticulitis of large intestine without perforation or abscess with bleeding |
| K574 | Diverticulitis of both small and large intestine with perforation and abscess |
| K5740 | Diverticulitis of both small and large intestine with perforation and abscess without bleeding |
| K5741 | Diverticulitis of both small and large intestine with perforation and abscess with bleeding |
| K575 | Diverticular disease of both small and large intestine without perforation or abscess |
| K5750 | Diverticulosis of both small and large intestine without perforation or abscess without bleeding |
| K5751 | Diverticulosis of both small and large intestine without perforation or abscess with bleeding |
| K5752 | Dvtrcli of both small and lg int w/o perf or abscs w/o bleed Diverticulitis of both small and large intestine without perforation or abscess without bleeding |
| K5753 | Dvtrcli of both small and lg int w/o perf or abscess w bleed Diverticulitis of both small and large intestine without perforation or abscess with bleeding |
| K578 | Diverticulitis of intestine, part unspecified, with perforation and abscess |
| K5780 | Diverticulitis of intestine, part unspecified, with perforation and abscess without bleeding |
| K5781 | Diverticulitis of intestine, part unspecified, with perforation and abscess with bleeding |
| K579 | Diverticular disease of intest, part unsp, w/o perf or abscs Diverticular disease of intestine, part unspecified, without perforation or abscess |
| K5790 | Dvrtclos of intest, part unsp, w/o perf or abscess w/o bleed Diverticulosis of intestine, part unspecified, without perforation or abscess without bleeding |
| K5791 | Diverticulosis of intestine, part unspecified, without perforation or abscess with bleeding |
| K5792 | Diverticulitis of intestine, part unspecified, without perforation or abscess without bleeding |
| K5793 | Dvtrcli of intest, part unsp, w/o perf or abscess w bleeding Diverticulitis of intestine, part unspecified, without perforation or abscess with bleeding |
| K58 | Irritable bowel syndrome |
| K580 | Irritable bowel syndrome with diarrhea |
| K581 | Irritable bowel syndrome with constipation |
| K582 | Mixed irritable bowel syndrome |
| K588 | Other irritable bowel syndrome |
| K589 | Irritable bowel syndrome, unspecified |
| K59 | Other functional intestinal disorders |
| K590 | Constipation |
| K5900 | Constipation, unspecified |
| K5901 | Slow transit constipation |
| K5902 | Outlet dysfunction constipation |
| K5903 | Drug induced constipation |
| K5904 | Chronic idiopathic constipation |
| K5909 | Other constipation |
| K591 | Functional diarrhea |
| K592 | Neurogenic bowel, not elsewhere classified |
| K593 | Megacolon, not elsewhere classified |
| K5931 | Toxic megacolon |
| K5939 | Other megacolon |
| K594 | Anal spasm |
| K598 | Other specified functional intestinal disorders |
| K5981 | Ogilvie syndrome |
| K5989 | Other specified functional intestinal disorders |
| K599 | Functional intestinal disorder, unspecified |
| K60 | Fissure and fistula of anal and rectal regions |