ICD-10-CM
ICD-10 code for IBS: K58.9
The CDC title for "IBS" is K58 (Irritable bowel syndrome), a header that is not billable. When nothing more specific is documented, the billable code is K58.9, Irritable bowel syndrome, unspecified.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under K58, then other CDC titles that name irritable bowel syndrome
A header groups codes and is not billed. A billable code is one you can report.
Related conditions
Related pages
- K58.9 code detailsNotes, nearby codes, CMS-HCC group
- Category K58Every code under it
- Chapter 11Diseases of the digestive system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for IBS?
The CDC title for "IBS" is K58 (Irritable bowel syndrome), a header that is not billable. When nothing more specific is documented, the billable code is K58.9, Irritable bowel syndrome, unspecified.
Is K58.9 billable?
Yes. K58.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What chapter is K58.9 in?
Chapter 11. Diseases of the digestive system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.