Ulcerative (chronic) rectosigmoiditis without complications

This code signifies chronic inflammation and ulceration affecting the rectosigmoid junction of the large intestine. It specifically denotes cases where no further complications, such as hemorrhage, fistula, or stricture, are documented. This condition is a form of inflammatory bowel disease (IBD).

Apply this code when documentation confirms a diagnosis of ulcerative rectosigmoiditis without any specified complications. This is appropriate for patients presenting with symptoms like bloody diarrhea, tenesmus, or abdominal pain localized to the rectosigmoid area, and endoscopic findings confirm the inflammatory changes. Ensure the physician explicitly states the absence of complications.

• Do not use this code if any complications (e.g., hemorrhage, toxic megacolon, fistula) are documented; instead, select a more specific K51.3x code.
• Distinguish from Crohn's disease of the large intestine (K50.1x) based on the specific inflammatory pattern and location.
• Requires clear physician documentation of "without complications" or the absence of any listed complications.