ICD-10 Code K90.821 – Short bowel syndrome with colon in continuity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K90.821 – Short bowel syndrome with colon in continuity
What it is
Short bowel syndrome with colon in continuity describes malabsorption after significant small-bowel loss, while the colon remains connected to the digestive tract. Use this code when documentation specifically states the colon is still in continuity.
Clinical signs
Clinical features vary; refer to documentation. Commonly documented findings include chronic diarrhea, poor nutrient absorption, weight loss, dehydration, and dependence on specialized nutrition support.
When to use this code
Use this code when the provider documents short bowel syndrome and clearly notes that the colon remains in continuity. It may appear after bowel resection, intestinal failure follow-up, or nutrition management visits. If the record does not confirm colon continuity, check documentation.
Do not use for
Do not use this code for short bowel syndrome without documentation of colon in continuity. Do not assign it for nonspecific malabsorption or diarrhea alone.
Coding tip
Look for operative reports, discharge summaries, or problem lists that explicitly state “colon in continuity” before assigning K90.821.