K51 - Ulcerative colitis
K51.9 - Ulcerative colitis, unspecified
K51.90 - Ulcerative colitis, unspecified, without complications
K51.91 - Ulcerative colitis, unspecified, with complications
K51.911 - Ulcerative colitis, unspecified with rectal bleeding
K51.912 - Ulcerative colitis, unspecified with intestinal obstruction
K51.913 - Ulcerative colitis, unspecified with fistula
K51.914 - Ulcerative colitis, unspecified with abscess
K51.918 - Ulcerative colitis, unspecified with other complication
K51.919 - Ulcerative colitis, unspecified with unspecified complications