Ulcerative (chronic) proctitis with fistula

This code signifies a chronic inflammatory condition affecting the rectum, specifically ulcerative proctitis, which has progressed to include an abnormal tract or connection (fistula). The inflammation is characterized by ulcerations within the rectal lining.

Use this code when documentation clearly indicates a diagnosis of ulcerative proctitis and the presence of a fistula, often described as perianal, rectovaginal, or rectovesical. This typically applies to patients with established inflammatory bowel disease (IBD) presenting with fistulizing complications.

• Ensure the documentation explicitly states "ulcerative proctitis" and "fistula" to support this specific code.
• Distinguish from Crohn's disease with fistula, which would be coded differently (K50.-).
• Do not use if the proctitis is not specified as ulcerative or if the fistula is not clearly linked to the proctitis.