K59 Other functional intestinal disorders
ICD-10-CM category K59 sits in Chapter 11 (Diseases of the digestive system, K00-K95). It contains 14 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.
Subcategories
K59.0 ConstipationK59.3 Megacolon, not elsewhere classifiedK59.8 Other specified functional intestinal disorders
Billable codes in K59
| Code | Description |
|---|---|
K59.00 | Constipation, unspecified |
K59.01 | Slow transit constipation |
K59.02 | Outlet dysfunction constipation |
K59.03 | Drug induced constipation |
K59.04 | Chronic idiopathic constipation |
K59.09 | Other constipation |
K59.1 | Functional diarrhea |
K59.2 | Neurogenic bowel, not elsewhere classified |
K59.31 | Toxic megacolon |
K59.39 | Other megacolon |
K59.4 | Anal spasm |
K59.81 | Ogilvie syndrome |
K59.89 | Other specified functional intestinal disorders |
K59.9 | Functional intestinal disorder, unspecified |
Search within ICD-10-CM for K59 and related codes
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