Toxic megacolon
K61.1 Rectal abscess Notes: Perirectal abscess ; ischiorectal abscess (K61.39)
Rectal abscess Notes: Perirectal abscess ; ischiorectal abscess (K61.39)
K62.8 Other specified diseases of anus and rectum Notes: Tear of anus, nontraumatic ; Anal intraepithelial neoplasia I and II …
Other specified diseases of anus and rectum Notes: Tear of anus, nontraumatic ; Anal intraepithelial neoplasia I and II (AIN I and II) (histologically confirmed) ; Dysplasia of anus NOS ; Mild and mod ...
K64 Hemorrhoids and perianal venous thrombosis Notes: Grade/stage I hemorrhoids ; Hemorrhoids (bleeding) without prolapse ou…
Hemorrhoids and perianal venous thrombosis Notes: Grade/stage I hemorrhoids ; Hemorrhoids (bleeding) without prolapse outside of anal canal ; Grade/stage II hemorrhoids ; Hemorrhoids (bleeding) that p ...
K51 Ulcerative colitis Notes: Backwash ileitis ; Ulcerative (chronic) pancolitis NOS ; Ulcerative (chronic) proctitis NOS ; …
Ulcerative colitis Notes: Backwash ileitis ; Ulcerative (chronic) pancolitis NOS ; Ulcerative (chronic) proctitis NOS ; Ulcerative (chronic) rectosigmoiditis NOS ; Inflammatory polyps of colon NOS ; L ...
K51.214 Ulcerative (chronic) proctitis with abscess
Ulcerative (chronic) proctitis with abscess
K51.412 Inflammatory polyps of colon with intestinal obstruction
Inflammatory polyps of colon with intestinal obstruction
K51.81 Other ulcerative colitis with complications
Other ulcerative colitis with complications

