ICD-10-CM Codes 2026 (USA)

• K51.013	Ulcerative (chronic) pancolitis with fistula

• K51.00	Ulcerative (chronic) pancolitis without complications
  K51.011	Ulcerative (chronic) pancolitis with rectal bleeding
  K51.012	Ulcerative (chronic) pancolitis with intestinal obstruction
  K51.013	Ulcerative (chronic) pancolitis with fistula
  K51.014	Ulcerative (chronic) pancolitis with abscess
  K51.018	Ulcerative (chronic) pancolitis with other complication
  K51.019	Ulcerative (chronic) pancolitis with unspecified complications
  K51.20	Ulcerative (chronic) proctitis without complications
  K51.211	Ulcerative (chronic) proctitis with rectal bleeding
  K51.212	Ulcerative (chronic) proctitis with intestinal obstruction
  K51.213	Ulcerative (chronic) proctitis with fistula
  K51.214	Ulcerative (chronic) proctitis with abscess
  K51.218	Ulcerative (chronic) proctitis with other complication
  K51.219	Ulcerative (chronic) proctitis with unspecified complications
  K51.30	Ulcerative (chronic) rectosigmoiditis without complications
  K51.311	Ulcerative (chronic) rectosigmoiditis with rectal bleeding
  K51.312	Ulcerative (chronic) rectosigmoiditis with intestinal obstruction
  K51.313	Ulcerative (chronic) rectosigmoiditis with fistula
  K51.314	Ulcerative (chronic) rectosigmoiditis with abscess
  K51.318	Ulcerative (chronic) rectosigmoiditis with other complication

Created by Peter Blahut, MD