Ulcerative (chronic) enterocolitis

This code signifies a chronic inflammatory condition affecting both the small intestine (enteritis) and the large intestine (colitis), characterized by ulceration of the mucosal lining. It represents a persistent and often severe form of inflammatory bowel disease (IBD) impacting the entire intestinal tract.

Assign this code when documentation explicitly states "ulcerative enterocolitis" or "chronic enterocolitis" with evidence of ulceration. This diagnosis is typically made based on endoscopic findings, biopsy results, and clinical symptoms such as chronic diarrhea, abdominal pain, and rectal bleeding.

• Differentiate from regional enteritis (Crohn's disease) or ulcerative colitis affecting only the colon.
• Look for specific mention of "ulcerative" and involvement of both small and large intestines.
• Do not use for acute or unspecified enterocolitis; these have different code assignments.