K91.850
✓ BillablePouchitis
Diseases of the digestive system (K00-K95)
Also Known As
Inflammation of internal ileoanal pouch
✅ No additional coding notes for K91.850
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CodeK91.850
BillableYes
ParentK91.85
CategoryDiseases of the digestive system (K00-K95)
Excludes10 rule(s)
Excludes20 note(s)
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)