K58.9
Irritable bowel syndrome without diarrhea
Diseases of the digestive system Billable
Quick Reference
IBS with constipation predominant or mixed pattern
Clinical Information
When to Use This Code
IBS with constipation predominant or mixed pattern
Common Clinical Scenarios
- Chronic abdominal pain with altered bowel habits
- IBS-C (constipation predominant)
- IBS-M (mixed diarrhea and constipation)
- Functional bowel disorder
Documentation Requirements
- Document symptom pattern using Rome IV criteria
- Specify predominant bowel habit (constipation, diarrhea, mixed)
- Record symptom duration (≥6 months with ≥3 months active)
- Note exclusion of organic disease (colonoscopy, celiac testing)
Coding Guidelines
Inclusion Terms
These terms are included in this code:
IBSIrritable colonSpastic colonIBS-C or IBS-M
Exclusion Terms
Do NOT use this code for:
- IBS with diarrhea (K58.0)
- Functional diarrhea (K59.1)
- Inflammatory bowel disease (K50-K51)
Coding Notes
Use K58.0 for IBS with diarrhea (IBS-D)
K58.9 covers IBS-C and IBS-M patterns
Consider FODMAP diet and cognitive behavioral therapy
Related ICD-10 Codes
Consider these related codes based on patient presentation:
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Code
K58.9
Category
Diseases of the digestive system
Billable Status
Billable
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