NPI Atlas

K58 – Irritable bowel syndrome

ICD-10-CM 2027 diagnosis code · Other diseases of intestines

Non-billable header

ICD-10-CM code K58

Code: K58 (claims format: K58)
Description: Irritable bowel syndrome
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 11. Diseases of the digestive system (K00-K95)
Block: K55-K64 Other diseases of intestines

Billable codes under K58

K58 is a header code and cannot be used on claims. Choose the most specific code:

K58.0 – Irritable bowel syndrome with diarrheaBillable
K58.1 – Irritable bowel syndrome with constipationBillable
K58.2 – Mixed irritable bowel syndromeBillable
K58.8 – Other irritable bowel syndromeBillable
K58.9 – Irritable bowel syndrome, unspecifiedBillable

Notes for K58

Includes:

irritable colon
spastic colon

Frequently asked questions

What is ICD-10 code K58?

K58 is the ICD-10-CM code for irritable bowel syndrome, in the block K55-K64 (Other diseases of intestines).

Is K58 a billable code?

No. K58 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.