K59.31
✓ BillableToxic megacolon
Diseases of the digestive system (K00-K95)
❌ Excludes1
inherited from K59.3Rules from parent category K59.3: Megacolon, not elsewhere classified
- • congenital megacolon (aganglionic) (Q43.1)
- • megacolon (due to) (in) Chagas' disease (B57.32)
- • megacolon (due to) (in) Clostridium difficile (A04.7-)
- • megacolon (due to) (in) Hirschsprung's disease (Q43.1)
📋 Code Instructions
from K59.3- • Code first: , if applicable (T51-T65) to identify toxic agent
🧪 Validate Combinations
Add K59.31 to the Excludes Checker to validate against your full code list.
Open in Checker →Code Information
CodeK59.31
BillableYes
ParentK59.3
CategoryDiseases of the digestive system (K00-K95)
Excludes14 rule(s)
Excludes20 note(s)
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)