Left sided colitis with intestinal obstruction

This code signifies inflammation of the left side of the colon, specifically the descending colon, sigmoid colon, and rectum, complicated by a blockage in the intestinal tract. The obstruction can be partial or complete, preventing the normal passage of stool and gas.

Use this code when documentation clearly indicates ulcerative colitis affecting the left colon and an associated intestinal obstruction. This typically presents with symptoms such as abdominal pain, distension, vomiting, and inability to pass flatus or stool, confirmed by imaging studies like X-rays or CT scans.

• Ensure documentation specifies "left sided" colitis; otherwise, a more general code for ulcerative colitis with obstruction may be appropriate.
• Do not confuse with Crohn's disease, which has distinct pathological features and different coding.
• Code any underlying cause of the obstruction if known and documented, following sequencing guidelines.